Mental Ability (NCO- Cyber Olympiad Class 7): Questions 80 - 85 of 205

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Question number: 80

» 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: 81

» 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: 82

» 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: 83

» 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

Question number: 84

» Mental Ability » Number Games

MCQ▾

Question

The product of two numbers is 25 and the sum of their squares is 125. The sum of the number is.

Choices

Choice (4) Response

a.

21.21

b.

13.22

c.

16.90

d.

None of the above

Question number: 85

» Mental Ability » Basic Algebra

MCQ▾

Question

If st and uv be any two rational numbers then we define: stuv=st+(uv)

Thus, subtracting a rational number means adding its additive inverse. Based on the statement given above solve the following Problem: Subtract 85 from 32 .

Choices

Choice (4) Response

a.

110

b.

3110

c.

110

d.

1410

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