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Maths Quotes

Mathematics is the QUEEN of all subject

Rupam

"zeroes sometimes makes you a hero.."

anand vijay

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(3 years ago) "Other"

Keshav runs a factory of 210 employes in each 3 shift 80 emp are required no one is allowed to work more than 16 hrsin a day how many emp are required to work 16 hrs in a day

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(3 years ago)

80*3 = 240 employees needed
We have 210
So 240-210 = 30 employees need to work double shift
Cross check: 180*8+30*16=1920 hours
240*8 = 1920 hours
So 30 is the answer

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(3 years ago) "Other"

We know that the vertices of a quadrilateralare 2, 3, 5, and 6 cm, respectively,from a point P. What is the largest possible area of this quadrilateral?

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(3 years ago)

Lets divide the area into 4 triangles
Area of triangle = 1/2 * base * height
So total area for right angle triangles are:
0.5*(2*3+3*5+5*6+6*2) = 31.5cm^2
If we diminish or expand any of the portions we eventually fall into same bucket I guess, so I think 31.5cm^2 should be the answer, all suggestions are welcome. Thanks.

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(3 years ago) "Other"

give me apportunity

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(3 years ago)

What exactly apportunity means? Can you be more specific?

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(3 years ago) "Other"

Twenty five sets of problems on Data Interpretation– one each for the DI sections of 25
CATALYST tests were prepared by the AMS research team. The DI section of each CATALYST
contained 50 questions of which exactly 35 questions were unique, i.e. they had not been used in
the DI section of any of the other 24 CATALYSTs. What could be the maximum possible number
of questions prepared for the DI sections of all the 25 CATALYSTs put together?
(Can anyone help by explaining the solution to this question)

Reply Like? Yes | No

(3 years ago)

Let me try to understand the question:
25 set of papers
50 in each with 35 distinct questions
Did I understand the question correctly?

If yes, the answer is: 35*25 = 875 questions.

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(3 years ago) "Other"

Why 0!=1 ?
Please help me

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(3 years ago)

n! = n*(n-1)!
1! = 1*(1-1)!
1! = 1*0!
As 1! = 1, hence 0! = 1

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(3 years ago)

We know that n! = n(n-1)(n-2)(n-3).....3(2)(1) which means that
n! = n(n-1)!
Dividing both sides of the equation by n, we have
(n - 1)! = n!/n
Using this fact, we can check the following pattern.
4! = 5!/5 = {(5)(4)(3)(2)(1)}/5 = 24
3! = 4!/4 = {(4)(3)(2)(1)}/4 = 6
2! = 3!/3 = {(3)(2)(1)}/3 = 2
1! = 2!/2 = {(2)(1)}/2=1

Now, we go to 0!
0! = 1!/1 = 1

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(3 years ago) "Other"

Like and subscribe my Youtube channel
Asif Iqbal
Maths class 10th and 9th Lectures
https://youtu.be/s7qPmsPs5bA

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(3 years ago) "Other"

Ten years ago,the average of family of four members was 24 years.Three children having been born,the average age of family is same today.What are the present ages of children if two children are identically twins and differ by two years from the younger one?

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(3 years ago)

24×4 =96 + 4×10 = 136
current age = 24×7 = 168
hence children age = 32
2A + A - 2 = 32
A = 34/3 = 11.33 not possible
data is wrong as child can not be older than 10 years

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(3 years ago) "Other"

hi ,my self Ritik Rathore want to place in a core organisation of civil engineering and groom my self .

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(3 years ago) "Other"

Hi, my name is Alister james lives in Delhi and doing my education in creativethinksmedia want to become an engineer.

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(3 years ago) "Other"

hello my name in vuresakunthala iam teacher in private school now free because corona holidays now i need job at home any on help me thq

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(3 years ago) "Other"

here are 20 balls which are red, blue or green. If 7 balls are green and the sum of red balls and green balls is less than 13, at most how many red balls are there?

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(3 years ago)

7 balls are green
sum of red balls and green balls is less than 13
7 + R < 13
=> R < 6
Hence at most 5 red balls are there

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(3 years ago) "Other"

if the tank is half fulled and set X and set Y are closed how many minutes will it take for set Z to empty the tank if alternate taps of set Z are closed

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(3 years ago)

X, Y & Z details missing

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(3 years ago) "Other"

The number of 5-digit numbers that can be formed from 4,2,0,7 and 3

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(3 years ago)

5! is the answer

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(3 years ago)

4*5*5*5*5 bcoz 0 cant be at first place

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(3 years ago)

Assuming repetition allowed - 1st Digit can be in 4 ways - Rest 4 can be in ways Hence 4*5*5*5*5 = 2500
Assuming repetition mot allowed = 4*4! = 4 * 24 = 96

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(3 years ago) "Other"

What is the referral code

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(3 years ago) "Other"

please help me in tcs nqt 2021

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(3 years ago) "Other"

got placed in infosys

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(3 years ago) "Other"

Three marketers distribute their products in a colony for pilot testing. Marketer A distributes
150 Items to the people equally and then was left with a few items. Marketer B distributes 270
Items to the people equally and then was left with the same number of Items as the number left
with Marketer A. Marketer C distributes 320 items to the people and is left with the same
number of items as the number left with Marketer A. What is the maximum possible number of
people in the colony?

Reply Like? Yes (1) | No

(3 years ago)

Let q are the no of people
150=aq+r----(1)
270=bq+r----(2)
320=cq+r-----(3)
Eqn. 2 -1=q(b-a)=120
Eqn.3-2=q(c-b)=50
Eqn.3-1=q(c-a)=170
H.c.f of all these is 10
Hence the members are 10.

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(3 years ago) "Other"

A ball is dropped from a height of 144 m and it rebounds to two thirds of the height from which it falls. if it continues to rebound, what distance will the ball have travelled before coming to rest?

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to (3 years ago) "Other"

hey surbhi
how u get placed

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to (3 years ago) "Other"

oh gosh,
are u placed in the company?
if not leave it.
and if yes then please let me know how u get placed?

Reply Like? Yes | No (1)

(3 years ago) "Other"

2 7 19 62 493...next no?

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(3 years ago) "Other"

Important Math questions and it's solutions.

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(3 years ago) "Other"

How would you dynamically allocate a one-dimensional and
two-dimensional array of integers?

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(3 years ago)

Use loops to iterate through array
And use available random generator functions to allocate any value, dynamically if you are getting values from any where that will work.
Please give more information if you are looking for anything else.

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(3 years ago) "Other"

Adarsh is preparing for a competitive exam. During his practice for the same, he comes across a sample paper which contains 12 yes/no type questions and 12 multiple choice questions, each with four possible answers. In how many distinct ways can Ankit solve the paper?

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(3 years ago)

244,672,066 ways
Yesno can be answered in 3 ways -> YesNoNone
Similarly MCQ can be answered in 5 ways
= (3^12)+(5^12)

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(3 years ago)

@varun - both need to be multiplied rather than addition.

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to (3 years ago) "Other"

Can please share any resource to learn quantitative aptitude or anything regarding maths please, I want to learn

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(3 years ago)

We can find many question and answers in the website by browsing, example at: https://m4maths.com/placement-puzzles.php?SOURCE=maths
You can try to solve the unsolved one as well which helps in learning

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(3 years ago) "Other"

Which of the following statements is/are true about locks in database management’?
1. Livelock and Deadlock are same.
2. Phase Locking has 2 stages namely- Expanding phase and Contracting phase.
3. Read Lock can be assigned to inﬁnite transactions simultaneously.

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to (3 years ago) "Other"

hi mam i had doudt about probability that sum of two dice are thrown, but sum o two dice are divisble by 4 and 6..i know the answewr is 7/18..
i need the clear explanation, means in a logical way
by adding all the sequence i get 16/36 means 8/18
sum of them are 1,3 /3,1/2,2/ and 1,5/2,4/3,3/4,2/5,1/4 and
these are the only combination i get 4 and 6 by adding of two dice
explain me in soon at email rahimkhan341341@gmail.comeven u
thnaking you.. not only her even u can also share the answer at email..

Reply Like? Yes | No

(1 year ago)

Condition should be.... Sum of two dice is divisible by 4 or 6.
Possible sums are 4,6,8,12.
Possible combinations to meet given conditions = 14
So probability =14/36= 7/18

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(3 years ago) "Other"

consider expression (3+x+x^2x^3x^4)^4=p0+P1x+p2x^2+.....P16x^16. Find value of p0+p1+p15+p16

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(3 years ago) "Other"

find the grammatical error i was so surprised that(b) i told me i was imagining things (c) but later others confirmed that they too had seen the same sight

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(3 years ago)

I said I was imagining things

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(3 years ago) "Other"

In how many ways one or more than one fruit, can be selected from 6 varieties of fruits given that there are 5 fruits of each variety?

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(3 years ago)

(1) Lets just first select from 1 variety,
In 5 ways one or more of same variety can be picked {1,2,3,4,5}
We have 6 such varieties

(2) Now lets go to second variety,
Additionally,
Picking from second variety can be done in 6 ways including picking zero {0,1,2,3,4,5,6}
And we have 5 such extra varieties
= 5*6*6*5 = 900

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(3 years ago) "Other"

Two articles A and B, with the same marked price were sold at 15% and 12% discounts respectively. Percentage of the profit earned on articles A and B was 6.25% and 20% respectively. The cost price of article B was Rs.160 less than the cost price of article A. Find the marked price of the each article.

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(3 years ago)

Let the CP of A=x+160 and B=x. Marked Price of A and B=P.
Then, SP of A = P*85/100 = (106.25/100)* (x+160) ---> 17P = (x+160)*21.25 ---(i)
SP of B = P*88/100 = (120/100)*x ---> 11P = 15x ---(ii)
Solving (i) & (ii), we get Marked Price = P=2400 and CP of B=x=1760, CP of A=(x+160)=1920

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(3 years ago) "Other"

how many three digits numbers can be formed using 2,3,4and5 with digits being repeated?

Reply Like? Yes (2) | No

(3 years ago)

Unit place has a choice of 4 numbers
Similarly tens,hundredth place has a choice of 4 numbers each
= 4*4*4 = 64

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(3 years ago) "Other"

3) What will be the output of the following pseudocode?
For input a = 8 & b = 9.
Function(input a, input b)
If(a < b)
return function(b, a)
elseif(b != 0)
return (a + function(a,b-1))
else
return 0

a) 56
b) 78
c) 72
d) 68

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(3 years ago)

The answer is option (c) , i.e , 72

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(3 years ago) "Other"

Hi, looking for feedback regarding the following question:
There are 500 candies. If 350 have sprinkles and 300 have chocolate chips, and at least 60 have neither sprinkles nor chocolate chips, the number of candies that have both is in this range:
a)40 and 120
b)80 and 180
c)180 and 320
d)210 and 300
e)300 and 350
This question is from this site and I've also placed my reasoning/solution for it.
Any help will be most appreciated.
Joy

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(3 years ago)

It is 210 and 300
Total candies 500
Out of these candies with both maximum is 300. Since chocklet chips is subset to sprinkles.
60 is neither of them. So either of them are 500-60=440
Now minimum =350+300-440=210
So it will be 210 and 300

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(3 years ago) "Other"

Today is my first day on this site. and I m very excited about learning and also join this site. I hope I do really well and got a placement.

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(3 years ago) "Other"

In how many ways can a team of 5 persons be formed out of a total of 10 persons such that 1. Two particular persons should be included in each team? If any team?
2. two particular persons should not be included in any team? If each team?

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(3 years ago)

1.8C3=56
2.8C5=56

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(3 years ago) "Other"

Salaams:
My work for us here as first timer is. Permutation and Combination.
Permutate and Combine the numbers below into 7 groups you can, viz;
7539162 Good luck!

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(3 years ago) "Other"

At the end of the day all the animals, birds, insects receive their daily allowance. If the eagle 🦅got £45, the spider 🕷 earned £71, a bee 🐝 was given £27. How much money would a kangaroo 🦘get?

Reply Like? Yes | No (1)

(3 years ago) "Other"

Solve the following question based on the information provided:
i.Six students A, B, C, D, E and F participated in a self-evaluation test of Quants and Data Interpretation (D.I).
ii.The total marks of A in Quants was just above C and in D.I. just above F.
iii.B was just above C in D.I. but he scored less than D in Quants.
iv.F got more marks than D and E in D.I. but did not perform as well in Quants as in D.I. as compared to D and E.
v.No one is in between C and D in Quant and C and A in D.I.
Which of the given statements is not necessary to answer the questions?

A)(ii)
B)(iii)
C)(iv)
D)All are necessary

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(3 years ago) "Other"

whatsapp@ +27638104141 love spells in Málaga,Sevilla,Barcelona,Madrid,Valencia,Calgary,Edmonton,Vancouver,Winnipeg,Ottawa,Toronto,Montreal

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(3 years ago) "Other"

hey, there I am Soumen Pal, pursuing my master's degree from Visvabharati University in social science. Is there any platform for me in the government sector?

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(3 years ago) "Other"

Dear Admin,
Please give proper data while making a daily puzzle. ( refer Today's puzzle dated 06.07.2020)
Is it possible to have age difference of 9 years only between daughter and mother?
One year ago, there ages were 3 years and 12 years.
Please ....................

Reply Like? Yes (1) | No

(3 years ago) "Other"

Find the product of all the factors of 3^16

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(3 years ago)

1x3x3^2x3^3.......................x3^16=3^136

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(3 years ago) "Other"

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(3 years ago) "Other"

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to (3 years ago) "Other"

i got answer 1:1 but there is no option

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to (4 years ago) "Other"

thank u sir can u please solve remaining problems?

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(4 years ago) "Other"

Two alloys contain zinc and copper in the ratio of 2 : 1 and 4 : 1. In what ratio the
two alloys should be added together to get as new alloy having zinc and copper in
the ratio of 3 : 1

Reply Like? Yes (1) | No

(3 years ago)

Let the ratio is x:y
(2x+4y):(x+y)=3:1
2x+4y=3x+3y=>x=y
Now x:y=1:1

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(4 years ago) "Other"

How many Kg ot wheat @ Rs. 14 per kg should be mixed with 32 kg of wheat @ Rs
22 per kg so that there is a profit of 25% by selling the mixture @ Rs 23.90 per kg

Reply Like? Yes | No (1)

(3 years ago)

Ans: 18 kg

Let x kg of wheat costing Rs. 14/kg is mixed, then (x*14 + 32*22)/(x+32) = 23.9*(100/125)
(14x + 704) / (x+32) = 19.12
14x + 704 = 19.12x + 611.84
5.12x = 92.16
x = 18

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(4 years ago) "Other"

Two types of rice (type 1 and type 2) were mixed in the respective ratio of 1 : 3.
The mixture was then sold @ 75.60 per kg to gain a profit of 20%. If the price of
type 1 rice is Rs. 75 per kg, what is the price of type 2 rice per kg

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