Mental Ability-Basic Arithmetic [NCO- Cyber Olympiad (SOF) Class 7]: Questions 31 - 38 of 121

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Question 31

Question MCQ▾

7 % expressed as a fraction is ________?

Choices

Choice (4)Response

a.

10

b.

c.

d.

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Question 32

Question MCQ▾

Which of the following is in descending order?

Choices

Choice (4)Response

a.

, ,

b.

, ,

c.

d.

Question does not provide sufficient data or is vague

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Question 33

Question MCQ▾

The average of 3 results is 10 and that of the first two is 5. The third result is________.

Choices

Choice (4)Response

a.

12.5

b.

20

c.

50

d.

1

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Question 34

Question MCQ▾

400 liters of milk is divided in two parts having ratio X: 20, if the first part is 200 liters, find x.

Choices

Choice (4)Response

a.

20

b.

42

c.

41

d.

39

Edit

Question 35

Question MCQ▾

Which of the following number is prime?

Choices

Choice (4)Response

a.

119

b.

187

c.

247

d.

All a., b. and c. are correct

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Question 36

Question MCQ▾

The ratio of the number of boys and girls in a college is 5: 6. If the percentage increase in the number of boys and girls be 10% and 15% respectively, what will be the new ratio?

Choices

Choice (4)Response

a.

5: 9

b.

8: 9

c.

23: 24

d.

21: 22

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Question 37

Question MCQ▾

Find the value of in each of the following equations

Choices

Choice (4)Response

a.

1.6

b.

0.5

c.

0.6

d.

5.4

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Question 38

Question MCQ▾

An ore contain 5% Iron. How many kilograms of the ore are required to get 70 kg of Iron?

Choices

Choice (4)Response

a.

850 kg

b.

544 kg

c.

1.44 kg

d.

1400 kg

Edit