Question 1

Which of the following is equivalent to 0.565656...?

Accepted Answer

56/99

Question 2

What is the value of (91 + 92 + 93 + ......... +140)?

Accepted Answer

5775

Question 3

854*854*854-276*276*276854*854+854*276+276*276=?

Accepted Answer

Given exp . is like this 854 * 854 * 854 - 276 * 276 * 276 854 * 854 + 854 * 276 + 276 * 276 = ? so ans = 854 - 276 = 578

Question 4

If a positive integer n, divided by 5 has a remainder 2, which of the following must be true?

Accepted Answer

You can find the integers which when divided by 5 have a remainder 2 by adding 2 to all multiples of 5. So we have n = 7 , 12, 17, 22 etc. From this series we can see that n does not have to be odd. Also n + 1 can be a prime because, for example, 12 + 1 = 13 And (n + 2) / 7 has a remainder 2 in some cases but not all. Remember the question asks us for what MUST be true, and we see that none of the statements are true in all cases. However, adding 3 to any of the values of n will always give a multiple of 5.

Question 5

If x / y is an integer, which of the following statements need NOT always be true?

Accepted Answer

In case (A), x and y could, for example, both be equal fractions and x/y would be an integer.

Question 6

If you write down all the numbers from 1 to 100, then how many times do you write 4 ?

Accepted Answer

4, 14, 24, 34, 44, 54, 64, 74, 84, 94 => has 11 number of (4's) 40, 41, 42, 43, 45, 46, 47, 48, 49 => has 9 number of (4's) So, totally (11 + 9 = 20) number of 4's in 1 to 100.

Question 7

Two bus tickets from city K to L and three tickets from city K to M cost Rs. 77, but three tickets from city K to L and two tickets from city K to M cost Rs. 73. What are the fares for cities L and M from K ?

Accepted Answer

If fares for cities L and M from K are x and y respectively, then 2x + 3y = 77 or 6x + 9y = 231...(1) 3x + 2y = 73 or 6x + 4y = 146...(2) subtracting 2 from 1, we get 5y = 85 y = Rs. 17 => x = Rs. 13

Question 8

In math questions answers each questions are solved with explanation. The questions are based from different topics. Care has been taken to solve the questions in such a way that students can understand each and every step 1. Which is greater than 4…

Accepted Answer

Solution: 5 greater than 4. Answer: (a)

Question 9

Which is the correct ascending order of the given numbers?

Accepted Answer

4/15, 0.33, 1/3

Question 10

What will come in place of the question mark in the series below? 7, 4.5, 5.5, 12, 49, ?

Accepted Answer

Ans. 4.5 = 7 x 0.5 + 1 5.5 = 4.5 x 1 + 1 12 = 5.5 x 2 + 1 49 = 12 x 4 + 1 ? = 49 x 8 + 1, i.e. ? = 393

Question 11

10 is added to a certain number, the sum is multiplied by 7, the product is divided by 5 and 5 is subtracted from the quotient. The remainder left is half of 88. What is the number?

Accepted Answer

Let the number be x When 10 is added, number = x + 10 When 7 is multiplied, number = 7 X (x + 10) According to question, ⇒[7 X (x+10) / 5] –5 = 44 ⇒7x + 70 = 49 X 5 ⇒x + 10 = 35, ⇒x = 25

Question 12

How many numbers are there from 700 to 950 (including both) which are neither divisible by 3 nor by 7?

Accepted Answer

144

Question 13

Find the square root of 15625.

Accepted Answer

125

Question 14

The average value of property of Agil, Mugilan and Anithais Rs. 130cr. The Property of Agil is 20cr greater than the property value of Mugilan and Anitha property value is 50cr greater than the Agil property value. The value ofproperty of Anitha is

Accepted Answer

Property value of Mugilan x 130 × 3 = x + x + 20 + x + 20 + 50 390 = 3x + 90 3x = 300 X = 100 Anitha = 100 + 20 + 50 = 170

Question 15

The largest 5 digit number exactly divisible by 95 is ______.

Accepted Answer

99940

Question 16

934+7217-9115=?

Accepted Answer

g i v e n s u m = 9 + 3 4 + 7 + 2 17 - 9 + 1 15 9 + 7 + 9 + 3 4 + 2 17 - 1 15 => 7 + 765 + 120 - 68 1020 => 7 + 817 1020

Question 17

For how many integer values of n will the value of the expression 4n + 7 be an integer greater than 1 and less than 200?

Accepted Answer

1 < 4n + 7 < 200 n can be 0, or -1 n cannot be -2 or any other negative integer or the expression 4n + 7 will be less than1. The largest value for n will be an integer < (200 - 7) /4 193/4 = 48.25, hence 48 The number of integers between -1 and 48 inclusive is 50

Question 18

x = y - (50/y), where x and y are both > 0 If the value of y is doubled in the equation above, the value of x will

Accepted Answer

The best approach is to pick a number that satisfies the rules that x and y are greater than 0. So for example you could choose 25 for y. The value of x before doubling is then 25 - 50/25 = 23 The value after doubling y will be 50 - 50/50 = 49, which is more than double.

Question 19

The average of 3 consecutive even numbers is A. If next 5 even numbers are added, then what is the average of these 8 numbers?

Accepted Answer

A + 5

Question 20

The average of 8 consecutive integers is 23/2. What is the average of first three integers?

Accepted Answer

9

Numbers Questions