Number System MCQs

Question 1

A 3-digit number 4a3 is added to another 3-digit number 984 to give the four-digit number 13b7, which is divisible by 11. Then, (a + b) is :

Accepted Answer

10

Answer

11

Answer

12

Answer

15

Question 2

$$\frac{{768 	imes 768 	imes 768 + 232 	imes 232 	imes 232}}{{768 	imes 768 - 768 	imes 232 + 232 	imes 232}} = ?$$

Accepted Answer

1000

Answer

536

Answer

500

Answer

268

Question 3

If 6*43 - 46@9 = 1904, which of the following should come in place of * ?

Accepted Answer

Answer

4

Answer

6

Answer

9

Answer

Cannot be determined

Question 4

The numbers 2, 4, 6, 8 ..... 98, 100 are multiplied together. The number of zeros at the end of the product must be :

Accepted Answer

12

Answer

10

Answer

11

Answer

13

Question 5

A number divided by 68 gives the quotient 260 and remainder zero. If the same number is divided by 65, the remainder is :

Accepted Answer

0

Answer

1

Answer

2

Answer

3

Question 6

The sum of the perfect square between 120 and 300 is :

Accepted Answer

1400

Answer

1204

Answer

1024

Answer

1296

Question 7

What is the remainder when 461 is divided by 51 ?

Accepted Answer

None of these

Answer

20

Answer

41

Answer

50

Question 8

If n is a natural number and n = $${p_1}^{{x_1}}$$ $${p_2}^{{x_2}}$$ $${p_3}^{{x_3}}$$ where p1, p2, p3 are distinct prime factors, then the number of prime factors for n is :

Accepted Answer

$${x_1} 	imes {x_2} 	imes {x_3}$$

Answer

$${x_1} + {x_2} + {x_3}$$

Answer

$$\left( {{x_1} + 1} \right)\left( {{x_2} + 1} \right)\left( {{x_3} + 1} \right)$$

Answer

None of these

Question 9

The number of prime factors in the expression 610 × 717 × 1127 is equal to :

Accepted Answer

64

Answer

54

Answer

71

Answer

81