# Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad Class 9): Questions 43 - 48 of 49

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## Question number: 43

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Out of pair of complementary angles, one is two- third of the other. Find the angles.

### Choices

Choice (4) Response

a.

One Angle = 54°, other Angle = 30°

b.

One Angle = 54°, other Angle = 36°

c.

One Angle = 55°, other Angle = 34°

d.

One Angle = 50°, other Angle = 36°

## Question number: 44

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

The sum of two angles of a triangle is 106° and their difference is 10°, find all the angles of the triangle

### Choices

Choice (4) Response

a.

48°, 58°, 74°

b.

50°, 40°, 90°

c.

30°, 60°, 90°

d.

40°, 50°, 90°

## Question number: 45

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Find the measure of all the angles of parallelogram, if one angle is 60 ° less than twice the smallest angle.

### Choices

Choice (4) Response

a.

60°, 120°, 60°, 120°

b.

68°, 112°, 68°, 112°

c.

80°, 100°, 80°, 100°

d.

36°, 144°, 36°, 144°

## Question number: 46

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Find the measure of all the angles of parallelogram, if one angle is 45° less than twice the smallest angle.

### Choices

Choice (4) Response

a.

75°, 105°, 75°, 105°

b.

40°, 140°, 40°, 140°

c.

85°, 95°, 85°, 95°

d.

65°, 115°, 65°, 115°

## Question number: 47

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Find the measure of all the angles of parallelogram, if one angle is 24° less than twice the smallest angle.

### Choices

Choice (4) Response

a.

60°, 120°, 60°, 120°

b.

66°, 114°, 66°, 114°

c.

68°, 112°, 68°, 112°

d.

56°, 124°, 56°, 124°

## Question number: 48

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Given, , and find the value of the following expression correct up to three places of decimal: .

### Choices

Choice (4) Response

a.

-0.413

b.

0.213

c.

-0.213

d.

0.413

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