# Mental Ability (NCO- Cyber Olympiad (SOF) Class 10): Questions 1 - 6 of 198

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## Question number: 1

» Mental Ability » Basic Geometry

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MCQ▾

### Question

The Volume of a solid metallic sphere is 2512 . It is melted and recast into solid right circular cones of radius 5 cm and height 16 cm. Calculate the number of cones recast.

### Choices

Choice (4) Response

a.

9

b.

6

c.

8

d.

7

## Question number: 2

» Mental Ability » Basic Algebra

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MCQ▾

### Question

If , which expression is equivalent to ?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 3

» Mental Ability » Days and Dates

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MCQ▾

### Question

If Tuesday falls on 25th December 1990, what day will be on 25th December 1992?

### Choices

Choice (4) Response

a.

Monday

b.

Sunday

c.

Tuesday

d.

Friday

## Question number: 4

» Mental Ability » Basic Statistics

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MCQ▾

### Question

Find the mean marks of students from the following cumulative frequency table:

 Marks Number of Students 0 and above 10 and above 20 and above 30 and above 40 and above 50 and above 60 and above 70 and above 80 and above 90 and above 100 and above 80 76 71 65 58 50 41 31 20 8 0

### Choices

Choice (4) Response

a.

78.9

b.

54.6

c.

62.5

d.

57.5

## Question number: 5

» Mental Ability » Basic Algebra

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MCQ▾

### Question

Indicate in which one of the following equations x is neither directly nor inversely proportional to y.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 6

» Mental Ability » Basic Geometry

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MCQ▾

### Question

In the figure drawn below, and are parallel and . What is ?

### Choices

Choice (4) Response

a.

b.

c.

d.

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