Mental Ability (NCO- Cyber Olympiad (SOF) Class 7): Questions 170 - 176 of 205

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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.

b.

c.

d.

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 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

Question number: 173

» Mental Ability » Basic Geometry

MCQ▾

Question

XYZ is an isosceles triangle with XY = 12 m and, then XZ ________?

Choices

Choice (4) Response

a.

12 m

b.

6 m

c.

3 m

d.

11 m

Question number: 174

» Mental Ability » Basic Arithmetic

MCQ▾

Question

What percent of is ?

Choices

Choice (4) Response

a.

20%

b.

25%

c.

0.4%

d.

2.5%

Question number: 175

» Mental Ability » Basic Arithmetic

MCQ▾

Question

The present ages of three persons in proportions 3: 6: 9. Five years ago, the sum of their ages was 57. Find their present ages (in years).

Choices

Choice (4) Response

a.

12, 24, 36

b.

18, 32, 15

c.

15, 30, 45

d.

All of the above

Question number: 176

» Mental Ability » Basic Geometry

MCQ▾

Question

ABC is an isosceles triangle with AB = AC and AD is altitude, then for angles

Choices

Choice (4) Response

a.

B ≥ C

b.

B > C

c.

B = C

d.

B < C

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