Mental Ability (NCO- Cyber Olympiad Class 7): Questions 166 - 172 of 205

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Question number: 166

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Two cubes have volumes in the ratio 1: 8. Then the ratio of their sides is

Choices

Choice (4) Response

a.

1: 8

b.

1: 18

c.

1: 2

d.

1: 4

Question number: 167

» Mental Ability » Basic Arithmetic

MCQ▾

Question

A man sold a radio for Rs. 1274 and gained 30%, the radio was bought for?

Choices

Choice (4) Response

a.

850

b.

1790

c.

1850

d.

980

Question number: 168

» Mental Ability » Basic Arithmetic

MCQ▾

Question

28 % of 450 is ________.

Choices

Choice (4) Response

a.

140

b.

112

c.

126

d.

125

Question number: 169

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Human blood WBC’s are expressed in terms of number of red blood cells per cubic mm. Express 9.9 million blood cells per cubic mm terms of scientific notation.

Choices

Choice (4) Response

a.

99 Equation

b.

0.99 Equation

c.

0.99 Equation

d.

9.9 Equation

Question number: 170

» Mental Ability » Basic Arithmetic

MCQ▾

Question

The ratio of the number of boys and girls in a college is 4: 3. If the percentage increase in the number of boys and girls be 17 % and 22 % respectively, what will be the new ratio?

Choices

Choice (4) Response

a.

12: 21

b.

5: 9

c.

21: 22

d.

34: 33

Question number: 171

» Mental Ability » Basic Algebra

MCQ▾

Question

Express 0.11 as a vulgar fraction.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 172

» Mental Ability » Basic Arithmetic

MCQ▾

Question

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

Choices

Choice (4) Response

a.

11 kmps

b.

15 kmps

c.

5 kmps

d.

8 kmps

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