# Mental Ability (NCO- Cyber Olympiad (SOF) Class 7): Questions 20 - 26 of 205

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## Question number: 20

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

The average of 6 results is 50 and that of the first five is 46. The sixth result is________.

### Choices

Choice (4) Response

a.

70

b.

12.5

c.

10

d.

1

## Question number: 21

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

A number divided by 3 is 7 less than that number, what is the number?

### Choices

Choice (4) Response

a.

25

b.

15

c.

10.5

d.

20

## Question number: 22

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Which of the following number is not prime?

### Choices

Choice (4) Response

a.

187

b.

247

c.

180

d.

None of the above

## Question number: 23

» Mental Ability » Basic Statistics

MCQ▾

### Question

A man sold a radio for Rs. 1980 and gained 10%. The radio was bought for

### Choices

Choice (4) Response

a.

Rs. 2178

b.

Rs. 1800

c.

Rs. 2000

d.

Rs. 1782

## Question number: 24

» Mental Ability » Basic Statistics

MCQ▾

### Question

Sanket travels 8 km to the East. Then he turns to the right and walks 5 km. Then again, he turns to his right and moves 8 km forward. How many km away is he from the starting point?

### Choices

Choice (4) Response

a.

5 km

b.

3 Km

c.

10 km

d.

2 km

## Question number: 25

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

The average weight of 20 students in class 9th of a school is 35 kg. Two new students, each of whom weighed 42 kg and 52 kg respectively were admitted in the class. Find the new average weight of the students in the class.

### Choices

Choice (4) Response

a.

40 kg

b.

36.1 kg

c.

43.33 kg

d.

42.2kg

## Question number: 26

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

In an examination, one should get 40 % of the maximum marks to pass. A student obtains 150 marks and declared failed by 45 marks. The maximum marks are

### Choices

Choice (4) Response

a.

640

b.

487.5

c.

1008

d.

500

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