# NCO- Cyber Olympiad (SOF) Class 8: Questions 20 - 23 of 510

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## Question number: 20

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MCQ▾

### Question

Analyze the following figure and find the number of quadrilaterals.

### Choices

Choice (4)Response

a.

10

b.

11

c.

9

d.

7

## Question number: 21

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MCQ▾

### Question

Seen through a mirror, the arms of a clock show 10: 15. What is the actual time?

### Choices

Choice (4)Response

a.

1: 45

b.

2: 45

c.

3: 10

d.

2: 15

## Question number: 22

» Mental Ability » Number Games » Number Analogies

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MCQ▾

### Question

The sum of two numbers is 30 and the difference of their squares is 30. The difference of the numbers is

### Choices

Choice (4)Response

a.

1

b.

0

c.

8

d.

3

## Question number: 23

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MCQ▾

### Question

A certain sum of simple interest becomes double in 10 years. In how many years will it become four times?

### Choices

Choice (4)Response

a.

40 years

b.

20 years

c.

5 years

d.

50 years

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