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Dimple

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Maths Quotes

If there is a God, he's a great mathematician.

Paul Dirac

Old math teachers never die, they just tend to infinity.

Unknown

Placed User Comments

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Vipul Chavan 4 years ago

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

yash mittal 5 years ago

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(8 years ago) "Other"

Odd one out from a,b,c,d,e

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(8 years ago)

It is c. Because C only has two open ends.

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to (8 years ago) "Other"

Some prime numbers can be expressed as Sum of other consecutive prime numbers.
For example

5 = 2 + 3
17 = 2 + 3 + 5 + 7
41 = 2 + 3 + 5 + 7 + 11 + 13

Your task is to find out how many prime numbers which satisfy this property are present in the range 3 to N subject to a constraint that summation should always start with number 2.

Write code to find out number of prime numbers that satisfy the above mentioned property in a given range. please answer this question.

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(8 years ago) "Other"

work hard now enjoy your luck

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(8 years ago) "Other"

In how many possible ways can you write 3240 as a product of 3 positive integers a, b and c.

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(8 years ago) "Other"

in case of a circular shaft subjected to torque the value of sheer stress

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(8 years ago) "Other"

In which direction an array element has to shuffled for insertion and deletion ?

Reply

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(8 years ago) "Other"

If a shop owner offers 10% discount on a product and sold at rs 800/-.If he got 5% profit on it,then what is the profit without giving the discount?

Reply Like? Yes (4) | No

(8 years ago)

90*x/100=800; x=888.88(without giving discount which is nothing but selling price of the product),
he gets 5perct profit on 800
so, 105*x/100=800;
x=762rs (this is the cost prise of that product)
so,sp=888.88,cp=762;
profit earned without giving discount is
(888.88-762)*100/762 =16.65percnt profit he earned without giving the discount.

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(8 years ago) "Other"

4(x-1/x)^2+8(x+1/x)-29=0

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(8 years ago) "Other"

Income of A and B in the ratio of 3:4 monthly and its expenditure are 4:5 then the saving ration in the possible way is

a) 9:10
b) 3:4
c) 13:20
d) 4:5

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(8 years ago)

let us consider the income of A and B are 3x and 4x;
then the saving of A is 3x-(3x*4/9) =1.67x;
and for B is 4x-(4x*5/9) =1.78x;
so,the ratio is 167:178 (167/178=.93)
which approxly equals to 9:10 (9/10=.9).

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(8 years ago) "Other"

heyy I am new in this..i want to prepare for tech mahindra aptitude test..please help me how do i do it?

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(8 years ago)

Tech Mahindra mainly focus on verbal and in number series,profit &loss,speed&distance.so pls focus on these topics mainly and there is also sectional cut-off for each section.

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(8 years ago) "Other"

Mr.Duggal invested `20000 with rate of interest at 20 p.c.p.a. The interest was compounded half yearly for first year and in the next year it was compounded yearly. What will be the total interest earned at the end of two years?

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(8 years ago) "Other"

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(8 years ago) "Other"

4 6 12 18 30 42 60 72 ...... logic for the series

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(8 years ago)

Answer is :
4 (3&5 are prime numbers)
6 (5&7 are prime numbers)
12 (11&13 are prime numbers)
18 (17&19 are prime numbers)
30 (29&31 are prime numbers)
series continues

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(8 years ago) "Other"

I am EEE student how can I get a internship from electrical company plz anyone suggest me

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(8 years ago) "Other"

i like tcs.i am eager to work

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(8 years ago)

So practice its questions from this site.

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to (8 years ago) "Other"

. .

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to (8 years ago) "Other"

can u please sir i m beginner for campus preparation how to prepare aptitude...pls help me out from this problem

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(8 years ago)

Practice aptitude from this site. Practice, practice and practice so that no company can reject you. Let it be any company apti read solution submitted by users of this site, this should help you.

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(8 years ago) "Other"

A fruit seller has 20kg of mangoes when he opened shop in the morning he sold 30/7kg before lunch and 80/13kg after lunch.how much was left in the evening.

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(8 years ago) "Other"

one trick to solve dice game

suppose there are two dice rolled together then what will be the probability of getting a number 6 as the sum that will be

possible chances = {(1,5),(2,4),(3,3),(4,2),(5,1)} =5
total chances =36
so probebility = 5/36

in the same way

for getting
1 0
2 1
3 2
4 3
5 4
6 5
7 7( now decreasing)
8 5
9 4
10 3
11 2
12 1

you can remember it by fallowing method

6=7
|
5=6 / 8=5
4=5 / 9=4
3=4 / 10=3
2=3 / 11=2
1=2 / 12=1
----------------------------------------

tnk u....

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(8 years ago) "Other"

7,5,7,13,29,?,232

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to (8 years ago) "Other"

concept A Milkman serves milk in packaged bottles of varied sizes. The possible size of the bottles are {1, 5, 7 and 10} litres. He wants to supply desired quantity using as less bottles as possible irrespective of the size. Your objective is to help him find the minimum number of bottles required to supply the given demand of milk. concept A Milkman serves milk in packaged bottles of varied sizes. The possible size of the bottles are {1, 5, 7 and 10} litres. He wants to supply desired quantity using as less bottles as possible irrespective of the size. Your objective is to help him find the minimum number of bottles required to supply the given demand of milk. concept A Milkman serves milk in packaged bottles of varied sizes. The possible size of the bottles are {1, 5, 7 and 10} litres. He wants to supply desired quantity using as less bottles as possible irrespective of the size. Your objective is to help him find the minimum number of bottles required to supply the given demand of milk.

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to (8 years ago) "Other"

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(8 years ago) "Other"

my elitmus Percentile is:

Verbal 69.32
Problem Solving 95.88
Quantitative 49.16

is there any chances by any companies?
please suggest me...

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(8 years ago) "Other"

At 6′o a clock ticks 6 times. The time between first and last ticks is 30 seconds. How long does it tick at 12′o clock

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(8 years ago) "Other"

Two cyclists begin training on an oval racecourse at the same time. The professional cyclist completes each lap in 4 minutes; the novice takes 6 minutes to complete each lap. How many minutes after the start will both cyclists pass at exactly the same spot where they began to cycle? plz answer this

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(8 years ago)

ans is 12 take lcm of the two 4 and 6

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(8 years ago)

after every interval of 4 mins novice will be on its starting position i.e. 4,8,12,16,20,24....
after every interval of 6 mins professional will be on its starting position i.e. 6,12,18,24.....
therefore they will be always meet each othrs at starting location after every 12 mins i.e. 12,24,36....

you can also take LCM of both and multiply it by
2 for first meeting
3 for second meeting
.
.
.
.
n+1 for nth meeting...

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(8 years ago) "Other"

In an examination

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(8 years ago) "Other"

My elitmus score is: Percentile
Quant- 75.11
P.S-85
Verbal-89.38
What are my chances?
Is this a good score?

Reply Like? Yes (1) | No

(8 years ago) "Other"

A travel agency has three kinds of vehicles 4 seater, 8 seater and 12 seater (all excluding the driver). In how many ways can 120 passengers be accommodated ensuring that no seat in any vehicle remains vacant? (1) 81 (2) 91 (3) 71 (4) 101 (5) None of these

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(8 years ago) "Other"

A books store offers a 10% discount on all the books sold plus an additional discount of 5% on the total bill. If the total bill after the initial discount is more than or equal to Rs. 1000. Dilshan bought 3 books worth Rs. 450 , Rs.520 and Rs. 250 respectively . How much money was Dilshan able to save as result of the various discounts offered by the store?
a. Rs. 120
b. Rs. 176.9
c. Rs. 61
d. Rs. 183
o None of the Above

Reply Like? Yes (1) | No

(8 years ago)

total cost of three books=450+520+250=1220
now , initial discount=1220*10/100=122
so, total=1220-122=1098>1000
therefore,additional discount =1098*5/100=54.9
=>total saving=122+54.9=176.9
b. Rs. 176.9

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(8 years ago) "Other"

The class Square is as follows:

using System.Collections.Generic;

internal class Square // version of 15-09-2015

{

private double m_Side;

private double m_PosX = 0;

private double m_PosY = 0;

public Square(double p_S)

{

m_Side = p_S;

}

public Square(Square p_Sq)

{

m_Side = p_Sq.p_Side;

}

public void SetPosition(double p_PX, double p_PY)

{

m_PosX = p_PX; m_PosY = p_PY;

}

public double GetSide()

{

return m_Side;

}

public static List PlaceInside(List p_Squares)

{

// YOUR CODE HERE

}

}

he method name and parameters are as follows:

public static List PlaceInside(List p_Squares)

The method PlaceInside gets a list of squares and returns them once inside each other with the same centre and placed so the biggest square lays on the X and Y axis (position of biggest = 0,0):

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(8 years ago) "Other"

optimize the code by applying the following logic.
The LCM for 2,3,4,5 and 6 is 60.This means that 61,121,181 etc. gives remainder 1, when divided by 2,3,4,5 and 6.You have to check whether 61,121,181 etc are now multipled. Display and mention the number of iterations needed to generate in the first case and last case

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(8 years ago) "Other"

Find last two digit of 1122^1122

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(8 years ago) "Other"

A biased die has a probability of 1/4 of showing a 5, while the probability of any of 1, 2, 3, 4, or 6

turning up is the same . If three such dice are rolled, what is the probability of getting a sum of atleast

14 without getting a 6 on any die ?

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(8 years ago)

in a throw of three dice total no of possible cases=6^3=216
now as 6 should not appear on any die and sum must be at least 14, therefore no of favourable cases=4
probability(getting 5)=1/4
suppose p(1 or 2 or 3 or 4 or 6)=x
since total probability of any sample space=1
so,p(1)+p(2)+p(3)+p(4)+p(5)+p(6)=1
x+x+x+x+1/4+x=1
=>5x=1-1/4
=>x=3/20
Now, p(getting sum 14 without 6 on any die)=(favourabale cases)/(total cases)
=4/216 = 1/54
Now, favourable cases are:
(5 4 5), (5 5 4), (5 5 5), (4 5 5)
therefore, required probability=1/54*{ ( p(5)*p(4)*p(5) )+( p(5)*p(5)*p(4) )+( p(5)*p(5)*p(5) )+( p(4)*p(5)*p(5) ) }
=>1/54*{ ( (1/4)*(3/20)*(1/4) ) + .....}
=>1/54*{ 3/320 + 3/320 + 1/64 + 3/320 }
=>1/54 * 14/320 = 7/8640 .

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to (8 years ago) "Other"