# Mental Ability (NCO- Cyber Olympiad (SOF) Class 7): Questions 40 - 47 of 205

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## Question number: 40

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

If () = (), then =?

### Choices

Choice (4) Response

a.

0

b.

4

c.

d.

## Question number: 41

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

The average of 5 results is 46 and that of the first four is 45. The fifth result is ________.

### Choices

Choice (4) Response

a.

12.5

b.

10

c.

1

d.

50

## Question number: 42

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Sakshi can do a piece of work in 10 days. Tanya is 15 % more efficient than Sakshi. The number of days taken by Tanya to do the same piece of work is:

### Choices

Choice (4) Response

a.

15

b.

18

c.

8.5

d.

25

## Question number: 43

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Three friends divide rupees 624 among themselves in the ratio . The share of the third friend is________.

### Choices

Choice (4) Response

a.

Rs. 192

b.

Rs. 288

c.

Rs. 144

d.

Rs. 148

## Question number: 44

» Mental Ability » Basic Statistics

MCQ▾

### Question

Nenshi can do a piece of work in 30 days. Kriya is 50 % more efficient than Nenshi. The number of days taken by Kriya to do the same piece of work is:

### Choices

Choice (4) Response

a.

25

b.

16

c.

15

d.

20

## Question number: 45

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

If = 81, then n=?

### Choices

Choice (4) Response

a.

4

b.

8

c.

2

d.

6

## Question number: 46

» Mental Ability » Basic Statistics

MCQ▾

### Question

Krishna travels 10 km to the north. Then he turns to the right and walks 3 km. Then again he turns to his right and moves 10 km forward. How many km away is he from the starting point?

### Choices

Choice (4) Response

a.

3 Km

b.

2 km

c.

10 km

d.

5 km

## Question number: 47

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

9 % expressed as a fraction is ________?

### Choices

Choice (4) Response

a.

b.

4

c.

d.

10

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