# Mental Ability (NCO- Cyber Olympiad Class 7): Questions 149 - 153 of 205

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## Question number: 149

» Mental Ability » Basic Statistics

Match List-Ⅰ List-Ⅱ▾

### Question

Match the reciprocal of each of the following in exponential form:
 List-Ⅰ List-Ⅱ (A) Equation (i) Equation (B) Equation (ii) Equation (C) Equation (iii) Equation (D) Equation (iv) Equation

### Choices

Choice (4) Response
• (A)
• (B)
• (C)
• (D)

a.

• (iii)
• (iv)
• (ii)
• (i)

b.

• (ii)
• (iv)
• (iii)
• (i)

c.

• (ii)
• (iii)
• (iv)
• (i)

d.

• (i)
• (iii)
• (iv)
• (ii)

## Question number: 150

» Mental Ability » Number Games » Number Analogies

MCQ▾

### Question

On dividing a number by 4, we get 3 as remainder. What will be the remainder, when the square of this number is divided by 4?

### Choices

Choice (4) Response

a.

0

b.

1

c.

2

d.

5

## Question number: 151

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

The present ages of three persons in proportions 2: 3: 4. Five years ago, the sum of their ages was 48. Find their present ages (in years).

### Choices

Choice (4) Response

a.

16, 28, 26

b.

8, 20, 28

c.

14, 21, 28

d.

None of the above

## Question number: 152

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Two poles 30 m and 15 m high stand upright in a ground. If their feet are 36 m apart, find the distance between tops.

### Choices

Choice (4) Response

a.

30 m

b.

39 m

c.

35 m

d.

25 m

## Question number: 153

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

A boat covers a certain distance downstream in 2 hour, while it comes back in 1 hours. If the speed of the stream be 5 kmph, what is the speed of the boat in still water?

### Choices

Choice (4) Response

a.

25 kmps

b.

35 kmps

c.

12 kmps

d.

11 kmps

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