Number System MCQs

Question 1

When 'n' is divisible by 5 the remainder is 2. What is the remainder when n2 is divided by 5 ?

Accepted Answer

4

Answer

2

Answer

3

Answer

1

Question 2

$$\left( {{3^{25}} + {3^{26}} + {3^{27}} + {3^{28}}} \right)$$ is divisible by :

Accepted Answer

30

Answer

11

Answer

16

Answer

25

Question 3

$${	ext{999}}\frac{{998}}{{999}} 	imes 999$$ is equal to :

Accepted Answer

998999

Answer

999899

Answer

989999

Answer

999989

Question 4

$$0.\overline {001} $$ is equal to -

Accepted Answer

$$\frac{1}{999}$$

Answer

$$\frac{1}{1000}$$

Answer

$$\frac{1}{99}$$

Answer

$$\frac{1}{9}$$

Question 5

If the sum of two numbers is 3 and the sum of their squares is 12, then their product is equal to -

Accepted Answer

- $$\frac{3}{2}$$

Answer

$$\frac{3}{2}$$

Answer

$$\frac{2}{3}$$

Answer

- $$\frac{2}{3}$$

Question 6

A man spends $$\frac{1}{3}$$ of his income on food, $$\frac{2}{5}$$ of his income on house rent, $$\frac{1}{5}$$ of his income on clothes. If he still has Rs. 400 left with him, his income is -

Accepted Answer

Rs. 6000

Answer

Rs. 4000

Answer

Rs. 5000

Answer

Rs. 7000

Question 7

By which number should 0.022 be multiplied so that product become 66 ?

Accepted Answer

3000

Answer

3200

Answer

4000

Answer

3600

Question 8

$$1 + \frac{1}{2} + \frac{1}{4} + \frac{1}{7} + \frac{1}{{14}} + \frac{1}{{28}}$$ is equal to :

Accepted Answer

2

Answer

2.5

Answer

3

Answer

3.5

Question 9

Which one of the following is a factor of the sum of first twenty-five natural numbers ?

Accepted Answer

13

Answer

26

Answer

24

Answer

12