# Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad (SOF) Class 7): Questions 62 - 68 of 122

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 416 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 300.00 or

## Question number: 62

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

6 children and 10 men completed a certain piece of work in 12 days. Each children takes twice the time taken by a man to finish the work. In how many days will 10 men finish the same work?

### Choices

Choice (4) Response

a.

8

b.

15.6

c.

12.5

d.

9

## Question number: 63

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Convert the 0.25 into vulgar fractions

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 64

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

A train 360 m long is running at a speed of . In what time will it pass a bridge 140 m long?

### Choices

Choice (4) Response

a.

48 sec

b.

45 sec

c.

40 sec

d.

42 sec

## Question number: 65

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Which of the following can be the exact multiple of 2?

### Choices

Choice (4) Response

a.

27

b.

15

c.

63

d.

12

## Question number: 66

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

The cost of cultivating a square field at the rate of rupees 250 per hectare is rupees 3650. What is the cost of putting a fence around it at 25 paise per meter?

### Choices

Choice (4) Response

a.

425.6 rupees

b.

200 rupees

c.

382.09 rupees

d.

320 rupees

## Question number: 67

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Human blood RBC’s are expressed in terms of number of red blood cells per cubic mm. Express 8.8 million blood cells per cubic mm terms of scientific notation.

### Choices

Choice (4) Response

a.

8.8

b.

88

c.

0.88

d.

0.88

## Question number: 68

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Which of the following can be the exact multiple of 3?

### Choices

Choice (4) Response

a.

28

b.

17

c.

63

d.

13

f Page