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Maths Quotes

Mathematics is the supreme judge; from its decisions there is no appeal.

Tobias Dantzig

Do not worry about your difficulties in mathematics, I assure you that mine are greater.

Albert Einstein

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M4Math helped me a lot.

Vipul Chavan 3 years ago

Thanks m4 maths for helping to get placed in several companies.
I must recommend this website for placement preparations.

yash mittal 4 years ago

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(4 years ago) "Other"

i want questions on TCS nqt

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(4 years ago) "Other"

a student asked to get the combined sum of three individual series but due to his laziness he wrote all three 1 series in the combined form as 3+2+4+8+3+a+27+ . then he realizes that some of the terms merged and converted to new term. what will be the exact sum if he suppose to find the sum of first 36 terms a)6812 b)9812 c)6914 d)6912

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(4 years ago) "Other"

No. Of zero?
1/2(6+10).

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(4 years ago) "Other"

The ratio of A and B’s income last year was 4:3 the ratio of their own incomes of last year and this year individually, it’s 3:4 and 5:6 respectively. If the total sum of their present income is ₹8.04 lakh, then what is the last year income of b? Please give solution

Reply Like? Yes (2) | No

(4 years ago)

2.7 lakh

Let the income of A & B last year was 4x and 3x.
Given ratio of their last year to this year income individually are 3:4 and 5:6 respectively.
Then income this year of A = 4x*(4/3) = 16x/3 and income of B = 3x*(6/5) = 18x/5
Sum of the incomes this year = 16x/3 + 18x/5 = 804000
=> x = 90000
Therefore, last year income of B = 3x = 3*90000 = 270000 = 2.7 lakh

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(4 years ago) "Other"

How to learn python

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(4 years ago) "Other"

consulting firms nj

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(4 years ago) "Other"

I have aptitude question solution

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(4 years ago) "Other"

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(4 years ago) "Other"

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to (4 years ago) "Other"

hiiii can u plz share infosys papers madam

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(4 years ago) "Other"

Mumbai¤¤Pune¤¤,91–8426924404 Black magic to kill enemy

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(4 years ago) "Other"

Ibm written papers

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(4 years ago) "Other"

near by a yard which is 225 meters long 26 papaya tree are planted at equal distance one tree being at each end of the yard what is the distance between two consecutive trees?

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(4 years ago)

9 meters
225/(26-1)= 225/25= 9 meters

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(4 years ago) "Other"

in december 12 2007 mohammed bought 300 units of afrococo cooperation shares @$55 per shares december 10th 2008 mohammed sold all his shares for $60 dollars per share what is mohammed realised gain?

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to (4 years ago) "Other"

in december 12 2007 mohammed bought 300 units of afrococo cooperation shares @$55 per shares december 10th 2008 mohammed sold all his shares for $60 dollars per share what is mohammed realised gain?

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(4 years ago) "Other"

The main temperature from 9th to 16th of march both days inclusive 11.6 degree Celsius and from 10th to 17th market was 12.2 degree Celsius if the temperature on month of march was 10.8 degree then on 17th march it was

Reply Like? Yes | No (1)

(4 years ago) "Other"

How to prepare m4 maths

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(4 years ago) "Other"

Two fill pipes A and B can fill a tank in 30 and 20 hours respectively. Pipe B alone
is kept open for half the time and both pipes are kept open for the remaining time.
In how many hours, will the tank be completely full?

Reply Like? Yes (1) | No

(4 years ago)

15 hrs

Let the total time taken be 'x' hrs.
Then, for x/2 hrs pipe B fills at 1/20 per hr and for remaining x/2 hrs both pipes A & B fills at (1/30 + 1/20) per hr.
(x/2)*(1/20) + (x/2)*(1/30 + 1/20) = 1
(x/2)*(8/60) = 1
=> x=15

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(4 years ago)

Thanks DEVENDRA.

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(4 years ago) "Other"

I want to start my u tube channel I am very good in giving Mathematics classes

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(4 years ago) "Other"

Russian Call Girls in Udaipur http://www.callgirlsinindia.com/russian-call-girls-udaipur/

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(4 years ago) "Other"

Call Girls in Udaipur http://www.callgirlsbooking.com/call-girls-udaipur/

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(4 years ago) "Other"

A takes twice as much time as B or thrice as much as C time to finish a piece of work working together they can finish the work in 2 days B can do the work alone in

Reply Like? Yes (2) | No

(4 years ago)

Let C takes 'x' days, then A takes 3x days and B takes 3x/2.
1 day work of A , B & C = 1/3x + 1/(3x/2)+ 1/x = 1/2
=> x=4
Therefore, A takes 12 days and B takes 6 days to do the work alone.

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(4 years ago) "Other"

welcome m4 maths

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to (4 years ago) "Other"

A wizard named Nepo says I am only three times my sons age. My father is 40 years more than twice my age. Together the three of us are a mere 1240 years old. How old is Nepo?

need Ans and explanation

Reply Like? Yes (2) | No

(4 years ago)

let nepo age be n
nepo's son's age be s

n=3s
lets nepo's father age be f

f=40+2n

now s+n+f=1240

n/3+n+2n+40 = 1240
10n/3=1200
n=360
s=n/3=120
f=2n+40=720+40=760
s=200/3
f=

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(4 years ago)

n=360.s=120,f=2n+40=2*360+40=760

Nepo's age is 360.

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(4 years ago)

let Nepo's age be x;
sons's age=x/3
father's age=40+2x

adding the ages;
x+x/3+40+2x=1240

10/3x=(1240-40)
10/3x=1200

10x=1200*3

10x=3600
x=36
so Nepo is 36 years
son is 36/3 years=12 years

father is 40+2(36) years=112 years

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to (4 years ago) "Other"

Rakesh, can you suggest some good books to prepare for elitmus....I mean from where do they refer max. no of questions while setting the paper?

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(4 years ago) "Other"

Prartian interview questions for coding

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(4 years ago) "Other"

Prartian interview questions

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(4 years ago) "Other"

please provide me zenq previous question papers

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to (4 years ago) "Other"

Prove by the mathematical induction method that 7²n +2³n-³.3n-¹ is divisible by 25for all n€N

Reply Like? Yes (36) | No (13)

(1 year ago)

No no no no no no no no no No no no no no no no no noNo no no no no no no no noNo no no no no no no no no(Sorry for long text because it saay to short and sorry for bad english)

Like? Yes (12) | No (7)

(4 years ago) "Other"

दो कंटेनर हैं, ए और बी, जिसमें दूध और पानी की समान मात्रा होती है
क्रमशः। ए की सामग्री का एक तिहाई बी में डाला जाता है, और फिर वही
मिश्रण की मात्रा बी से ए में वापस स्थानांतरित की जाती है। यह तीन बार किया जाता है।
A में अब दूध और पानी का अनुपात क्या है?

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(4 years ago) "Other"

a 100 litres spirit water solution contain 75% spirit. find the amount of water to be added to convert it into 60% spirit solution

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(4 years ago)

75:(25+x)=60:40
(25+x)=40*75/60=50
x=25lt
Water to be added=25lts.

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(4 years ago) "Other"

If principal amount triples itself in 3 years then in how much it takes to to make Principal amount 9 times

Reply Like? Yes (1) | No

(4 years ago)

If principal amount triples itself in 3 years, then it will take 12 years to make Principal amount 9 times.
In 3 years , the interest is 2 times the principal amount. in 12 years, the interest is 8 times the principal amount.

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(4 years ago)

Final amount to be 9 times we need interest to be 8 times.mes
In Three years interest become 2 times
In Six year interest become 4 times
Hence in 12 years interest become 8 times

So in 12 years amount will become 9 times

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(4 years ago)

In 3 years Intrest =3P-P=2P
So in 12 years it becomes =8P
Now in 12 years it beclmes =8P+P=9P

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(4 years ago) "Other"

1.2/3rd of the balls in a bag are blue, the rest are pink. if 5/9th of the blue balls
and 7/8th of the pink balls are defective, find the total number of balls in the bag
given that the number of non defective balls is 146?

Reply Like? Yes | No

(4 years ago)

432

Let total balls be x. Blue=2x/3, Pink=x/3
Defective balls = (5/9)*(2x/3) + (7/8)*(x/3) = 143x/216
Non defective balls = x - 143x/216 = 73x/216
Given non defective balls are 146, so 73x/216 = 146 => x=432

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(4 years ago)

Let total balls in the beg are x
Then Blue balls in the beg are = 2x/3
Pink balls in the beg are = 1-2x/3=x/3
Defective blue balls= 5/9 (2x/3)
Defective pink balls= 7/8 (x/3)
Total Defective balls in the beg are= 143x/216
Hence total non defective balls in the beg are = x-143x/216=73x/216
Given that total defective balls in the beg are 146
Hence 73x/216=146
i.e. X= 432 Balls

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(4 years ago)

Let the total numbers of the ball in a bag be x.

Blue balls = 2/3 of x

Pink ball = x - 2x/3

= x/3

Now,

Defective Blue balls = 5/9 of (2/3 of x)

= 5/9 × 2/3 × x

= 10/27 × x

Defective Pink balls = 7/8 of x/3

= 7x/24

Now, Defective Blue and Pink balls = 146

10x/27 + 7x/24 = 146

(80x + 63x)/216 = 146

∴ 143x = 146 × 216

x = 220.53

= 221 balls.

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(4 years ago) "Other"

Tajmahal 2.India 3.asia 4.Agra 5.uttar Pradesh

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(4 years ago)

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(4 years ago)

Tajmahal..............As all other are name of City, state, country, and continent Tajmahal is monument

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(4 years ago) "Other"

Rohan has 1120 pens and he categorized all pens into three types such that he earns a profit of 12%,
16% and 20% respectively on each type. He earns 13% on first two types and earns overall profit of 15% on
all types. Find the number of pens in all types?

Reply Like? Yes (1) | No

(4 years ago)

Number of pens in each category are 600/200/320 respectively.

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(4 years ago) "Other"

To cover a distance a man first goes 3/8 th of the journey by train, 20% of the remaining by bus and still he has 6 km. Find the total distance.

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(4 years ago)

Total distance is 12 kms.

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(4 years ago) "Other"

Raman, Naman and Aman are roommates and were given a job to clean their room on Sundays. The job was easy, but they made it complicated. Sometimes they did it in pairs, sometimes individually, sometimes they did it all together. At the end of the month, a mathematician had following observations:
1. Aman needed 1 hour less than Raman to complete the work.
2. When they all worked together, they required 60 minutes to do complete job.
3. When Raman and Naman started working together and Raman left after 1 hour, then Naman had to work further for 3 more hours to complete the job.
The mathematician wants you to calculate how much work does Aman do per hour?

Reply Like? Yes (1) | No

(4 years ago)

Aman completes work in 2 hrs.
Time taken to complete total work by Aman= 2 hrs; By Raman = 3 hrs; By Naman = 6 hrs.

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(4 years ago) "Other"

you have three dice each side is numbered as 1,2,3,4,5,6 .you have to take a
number from user check that number as sum of any side number of these
three dice.like we take number as 5 then the possibility are (1,1,3) (1,2,2)
(1,3,1) (2,1,2) (2,2,1) (3,1,1) and is 6 possibility. So write to a program for that.

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(4 years ago) "Other"

AnyOne pls tell me how to solve markeup price given in degrees with cp and sp ratio and successive discounts... Share any di with solution regardng this

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(4 years ago) "Other"

https://www.theincircle.com

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(4 years ago) "Other"

Thank you m4maths.

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(4 years ago) "Other"

Find the smallest number in a GP whose sum is 38 and product 1728

Reply Like? Yes (2) | No

(4 years ago)

Numbers are 8,12,18.
smallest number is 8.

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(4 years ago) "Other"

The average temperature of Monday, Tuesday and Wednesday were 37°C and on Tuesday, Wednesday and Thursday was 34°C. If the temperature on Thursday was 4/5 th of that of Monday, then what was the temperature on Thursday?
a) 36 °C

Reply Like? Yes | No (1)

(4 years ago)

Ans: 36°C

Mon+Tue+Wed=3x37=111 ---(i) and Tue+Wed+Thu=3x34=102 ---(ii)
Subtracting (ii) from (i), Mon - Thu=9 ---(iii)
Given, Thu=(4/5)xMon => Mon=(5/4)xThu
Substituting this value of Mon in (iii), (5/4)xThu - Thu=9
Thu=36
Therefore, temperature on Thursday was 36 °C.

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(4 years ago) "Other"

In a T-shirt stitching factory, the accepted pieces on Friday were 95% of the total production and rejected pieces on Saturday were 10% of the total production. The overall rejection rate for the two days combined works out to 8.33%.

What was the ratio of production of Friday to production of Saturday?

Reply Like? Yes (3) | No

(4 years ago)

ratio of production of Friday to production of Saturday = 1/2

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(4 years ago) "Other"

Coding question in TCS off campus phase 2

Find unit digit of x raised to power y
Given two numbers x and y, find unit digit of xy.
Method 1 (Simple) Compute value of xy and find its last digit. This method causes overflow for slightly larger values of x and y.

Method 2 (Efficient)
1) Find last digit of x.
2) Compute x^y under modulo 10 and return its value.

// Efficient C++ program to
// find unit digit of x^y.
#include

using namespace std;

// Returns unit digit of x
// raised to power y

int unitDigitXRaisedY(int x, int y)
{

// Initialize result as 1 to

// handle case when y is 0.

int res = 1;

// One by one multiply with x

// mod 10 to avoid overflow.

for (int i = 0; i < y; i++)

res = (res * x) % 10;

return res;
}

// Driver program

int main()
{

cout

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(4 years ago) "Other"

from where i can clear my quatitative aptitude concepts for tcs offcampus drive

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(4 years ago) "Other"

Seriously,hire some developers to increase the session time.It gets logged off just after 10 min or so and logging in each time is a pain.

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to (4 years ago) "Other"

Q. There are a certain number of apples in a big box. A boy takes half apple more, than half of them. A second boy takes half apple more than half of the remaining and so on. After the 7th boy takes his share, the number of apples in the box is 635 less than the original number of apples. If no apple is cut in the entire process, how many apples are left after the fifth boy takes apples from the box?

Option
(1) 9
(2) 19
(3) 39
(4) 59

how you consider x/2+1/2=10? in the solution

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(4 years ago) "Other"

where can I get solutions for the questions

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(4 years ago) "Other"

When stuck, generate-and-test

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