Number System MCQs

Question 1

1260 ÷ 14 ÷ 9 = ?

Accepted Answer

10

Answer

9

Answer

91

Answer

810

Question 2

Consider the following statements : 1. If x and y are composite numbers, then x + y is always composite. 2. There does not exist a natural number which is neither prime nor composite. Which of the above statements is/are correct ?

Accepted Answer

Neither 1 nor 2

Answer

1 only

Answer

2 only

Answer

Both 1 and 2

Question 3

If 0 < x < 1, which of the following is greatest ?

Accepted Answer

$$\frac{1}{{{x^2}}}$$

Answer

x

Answer

x2

Answer

2

Question 4

Which one of the following is a prime number ?

Accepted Answer

373

Answer

161

Answer

221

Answer

437

Question 5

If the sum of two numbers is 14 and their difference is 10. Find the product of these two numbers.

Accepted Answer

24

Answer

22

Answer

20

Answer

18

Question 6

7 is added to a certain number; the sum is multiplied by 5 ; the product is divided by 9 and 3 is subtracted from the quotient. Thus, if the remainder left is 12, what was the original number ?

Accepted Answer

20

Answer

30

Answer

40

Answer

60

Question 7

If n is an integer, how many values of n will give an integral value of $$\left( {\frac{{16{n^2} + 7n + 6}}{n}} \right)$$ ?

Accepted Answer

4

Answer

2

Answer

3

Answer

None of these

Question 8

What is 786 times 964 ?

Accepted Answer

757704

Answer

754164

Answer

759276

Answer

749844

Question 9

Let x be the product of two numbers 3, 659, 893, 456, 789, 325, 678 and 342, 973, 489, 379, 256. The number of digits in x is :

Accepted Answer

34

Answer

32

Answer

35

Answer

36