# Mental Ability (NCO- Cyber Olympiad Class 9): Questions 107 - 114 of 219

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## Question number: 107

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

How much pure alcohol should be added to 400ml of a 15 % solution to make its strength 32%?

### Choices

Choice (4) Response

a.

100 ml

b.

95 ml

c.

90 ml

d.

80 ml

## Question number: 108

» Mental Ability » Basic Algebra

MCQ▾

### Question

What is the solution to ?

### Choices

Choice (4) Response

a.

15

b.

35

c.

45

d.

25

## Question number: 109

» Mental Ability » Basic Algebra

MCQ▾

### Question

What is the slope of the line ?

### Choices

Choice (4) Response

a.

-4

b.

5

c.

d.

## Question number: 110

» Mental Ability » Basic Algebra

MCQ▾

### Question

Distance between the points (8, 10) and (4, -5) is

### Choices

Choice (4) Response

a.

b.

400

c.

d.

## Question number: 111

» Mental Ability » Basic Algebra

MCQ▾

### Question

If , find the value of .

### Choices

Choice (4) Response

a.

32

b.

45

c.

34

d.

25

## Question number: 112

» Mental Ability » Basic Algebra

MCQ▾

### Question

Secants and intersect the circle at R and O respectively. What is the length of ?

### Choices

Choice (4) Response

a.

b.

17

c.

26

d.

## Question number: 113

» Mental Ability » Number Games » Number Series

MCQ▾

### Question

In the following number series, how many 9’s are there which are preceded by 3 but not followed by 4?

2 3 9 5 1 3 9 6 7 3 9 4 8 9 3 4 9 3 2 3 9 8 3 9 3

### Choices

Choice (4) Response

a.

3

b.

4

c.

1

d.

2

## Question number: 114

» Mental Ability » Basic Algebra

MCQ▾

### Question

What is the solution to ?

### Choices

Choice (4) Response

a.

14

b.

34

c.

-34

d.

-14

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