Mental Ability [NCO- Cyber Olympiad (SOF) Class 8]: Questions 1 - 9 of 241

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Question 1

Question MCQ▾

If 12 workers can color 24 houses in 8 days, how many houses can 6 workers color in 4 days?

Choices

Choice (4)Response

a.

3

b.

24

c.

6

d.

12

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Question 2

Question MCQ▾

The length of the minute hand on a wall clock is 21 cm. The area swept by the minute hand in 30 minutes is

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 3

Question MCQ▾

The largest possible square is inscribed in a circle of unit radius. The area of the square in square units is

Choices

Choice (4)Response

a.

b.

c.

d.

2

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Question 4

Question MCQ▾

If the radius of a cone is increased by 50% , its volume is increased by

Choices

Choice (4)Response

a.

125%

b.

50%

c.

75%

d.

150%

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Question 5

Question MCQ▾

The length of a rope by which a horse must be tethered to graze over an area of 1386 is

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 6

Question MCQ▾

The value of is ________

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 7

Question MCQ▾

The measure of an angle which is five times its complement is

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 8

Question MCQ▾

If the area of a triangle with base x is equal to area of a square of side x, the altitude of the triangle is

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 9

Question MCQ▾

If the radius of a cone is increased by 65% , its volume is increased by

Choices

Choice (4)Response

a.

180%

b.

172.25%

c.

108.5%

d.

125.3%

Edit