# Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad (SOF) Class 9): Questions 1 - 8 of 49

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## Question number: 1

» Mental Ability » Basic Arithmetic

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MCQ▾

### Question

What is 5 % of 7/60?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 2

» Mental Ability » Basic Arithmetic

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MCQ▾

### Question

What is 40 % of 10/7?

### Choices

Choice (4) Response

a.

11/28

b.

2.7

c.

10/28

d.

4/7

## Question number: 3

» Mental Ability » Basic Arithmetic

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MCQ▾

### Question

What is 25 % of 1/7?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 4

» Mental Ability » Basic Arithmetic

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MCQ▾

### Question

In a family, the father took of the cake and he had 5 times as much as each of the other members had. The total number of family member is ________

### Choices

Choice (4) Response

a.

9

b.

2

c.

3

d.

7

## Question number: 5

» Mental Ability » Basic Arithmetic

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MCQ▾

### Question

The bacteria in a culture grows by in the first hour, decreases by in the second hour and again increases by in the third hour. If at the end of the third hour the count of bacteria is 9000. The original count of bacteria in the sample is________

### Choices

Choice (4) Response

a.

11956

b.

11286

c.

11784

d.

11458

## Question number: 6

» Mental Ability » Basic Arithmetic

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MCQ▾

### Question

A bike travels 70 km from Rajkot to Jamnagar at 14 km per hour but returns the same distance at 15 km per hour. The average speed for the round trip is closest to

### Choices

Choice (4) Response

a.

13 km/hr

b.

10km/hr

c.

16km/hr

d.

12km/hr

## Question number: 7

» Mental Ability » Basic Arithmetic

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MCQ▾

Only if

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 8

» Mental Ability » Basic Arithmetic

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MCQ▾

### Question

The bacteria in a culture grows by in the first hour, decreases by in the second hour and again increases by in the third hour. If at the end of the third hour the count of bacteria is 14000. The original count of bacteria in the sample is________

### Choices

Choice (4) Response

a.

20199

b.

17199

c.

18199

d.

19199

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