Number System MCQs

Question 1

A six digit number is formed by repeating a three digit number : For example, 256, 256 or 678, 678 etc. Any number of this form is always exactly divisible by -

Accepted Answer

1001 only

Answer

7 only

Answer

11 only

Answer

13 only

Question 2

If the difference between the reciprocal of a positive proper fraction and fraction itself be $$\frac{{17}}{{72}}$$ , then the fraction is -

Accepted Answer

$$\frac{8}{9}$$

Answer

$$\frac{9}{8}$$

Answer

$$\frac{5}{8}$$

Answer

$$\frac{7}{9}$$

Question 3

The sum of the squares of 3 consecutive positive numbers is 365. The sum of the numbers is -

Accepted Answer

33

Answer

30

Answer

36

Answer

45

Question 4

The number 1422 - 1 is divisible by :

Accepted Answer

13

Answer

19

Answer

7

Answer

9

Question 5

The sum of three numbers is 252. If the first number is thrice the second and third number is two-third of the first, then the second number is :

Accepted Answer

42

Answer

41

Answer

21

Answer

84

Question 6

The real number to be added to 13851 to get a number which is divisible by 87 is :

Accepted Answer

69

Answer

18

Answer

43

Answer

54

Question 7

Among the following statements, the statement which is 'not correct' is :

Accepted Answer

Every real number is a rational number

Answer

Every natural number is a real number

Answer

Every integer is a rational number

Answer

Every natural number is an integer

Question 8

Sum of three consecutive integers is 51. The middle one is -

Accepted Answer

17

Answer

14

Answer

15

Answer

16

Question 9

The sum of 10 terms of the arithmetic series is 390. If the third term of the series is 19. Find the first term :

Accepted Answer

3

Answer

5

Answer

7

Answer

8