# NCO- Cyber Olympiad (SOF) Class 8: Questions 47 - 51 of 510

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## Question number: 47

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MCQ▾

### Question

A certain sum of simple interest becomes its three times in 30 years. In how many years will it becomes double?

### Choices

Choice (4)Response

a.

20 years

b.

5 years

c.

60 years

d.

15 years

## Question number: 48

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MCQ▾

### Question

If 16 employees can complete 32 tasks in 8 days, how many tasks can 8 employees complete in 4 days?

### Choices

Choice (4)Response

a.

16

b.

8

c.

12

d.

14

## Question number: 49

» Mental Ability » Number Games » Number Analogies

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MCQ▾

### Question

What least number must be subtracted from 136 to make it a perfect square?

### Choices

Choice (4)Response

a.

15

b.

8

c.

21

d.

7

## Question number: 50

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MCQ▾

### Question

If the radius of a cone is increased by 80%, its volume is increased by

### Choices

Choice (4)Response

a.

160%

b.

40%

c.

224%

d.

112%

## Question number: 51

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MCQ▾

### Question

Study the diagram given carefully and answer the question.

Employed engineers in town are represented by?

### Choices

Choice (4)Response

a.

6

b.

7

c.

5

d.

4

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