Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad Class 7): Questions 47 - 54 of 122

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Question number: 47

» Mental Ability » Basic Arithmetic

MCQ▾

Question

If each side of a cube is doubled, its volume

Choices

Choice (4) Response
a.

Becomes 6 times

b.

Becomes 8 times

c.

Becomes 4 times

d.

Is doubled

Question number: 48

» Mental Ability » Basic Arithmetic

MCQ▾

Question

In an election, two candidates contested. A candidate secured 30 % of the valid votes and is elected by a majority of 150 votes. Find the total number of valid votes.

Choices

Choice (4) Response
a.

375

b.

570

c.

400

d.

510

Question number: 49

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Simplify: 108÷36of14+8

Choices

Choice (4) Response
a.

10

b.

20

c.

11

d.

21

Question number: 50

» Mental Ability » Basic Arithmetic

MCQ▾

Question

An ore contain 9 % lead. How many kilograms of the ore are required to get 60 kg of lead?

Choices

Choice (4) Response
a.

666.66 kg

b.

850.78 kg

c.

544 kg

d.

144.22 kg

Question number: 51

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Which is greatest in 1423%,415%and0.15?

Choices

Choice (4) Response
a.

0.15

b.

1423%

c.

415%

d. None of the above

Question number: 52

» Mental Ability » Basic Arithmetic

MCQ▾

Question

An ore contain 8 % copper. How many kilograms of the ore are required to get 68 kg of copper?

Choices

Choice (4) Response
a.

85 kg

b.

850 kg

c.

544 kg

d.

5.44 kg

Question number: 53

» Mental Ability » Basic Arithmetic

MCQ▾

Question

The cost of cultivating a square field at the rate of rupees 360 per hectare is rupees 3240. What is the cost of putting a fence around it at 75 paise per meter?

Choices

Choice (4) Response
a.

600 rupees

b.

900 rupees

c.

700 rupees

d.

800 rupees

Question number: 54

» Mental Ability » Basic Arithmetic

MCQ▾

Question

If 30 men working 8 hours a day can do a piece of work in 15 days, in how days will 15 men working for 7 hours a day to do the same piece of work?

Choices

Choice (4) Response
a.

55 days

b.

34.28 days

c.

30 days

d.

12 days

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