IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 406 - 413 of 1022

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Question number: 406

» Comparing Quantities

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MCQ▾

Question

When a number is reduced by 12, it becomes 20 % of itself. Find the number.

Choices

Choice (4) Response

a.

15

b.

30

c.

12

d.

25

Question number: 407

» Exponents and Powers

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MCQ▾

Question

The value of is ________.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 408

» Comparing Quantities

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Question

Two numbers are 15 % and 30 % less than a third number respectively. How much % is the second number less than the first?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 409

» Comparing Quantities

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MCQ▾

Question

A number P exceeds Q by 50%. By what percentage is P more than Q?

Choices

Choice (4) Response

a.

30%

b.

50%

c.

55%

d.

35%

Question number: 410

» Comparing Quantities

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MCQ▾

Question

Two numbers are in the ratio of 5: 4. If 5 be added to both, their ratio changes to 6: 5. The smaller number is ________.

Choices

Choice (4) Response

a.

25

b.

32

c.

36

d.

20

Question number: 411

» Exponents and Powers

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Question

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 412

» Comparing Quantities

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MCQ▾

Question

A contractor employed 210 men to build a house in 60 days. After 12 days, he was joined by 70 more men. In how many days will the remaining work be finished?

Choices

Choice (4) Response

a.

40 days

b.

36 days

c.

38 days

d.

35 days

Question number: 413

» Algebraic Expressions

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MCQ▾

Question

Step 1:

Step 2:

Step 3:

Are the above given steps showing simplification of algebraic expression

?

Choices

Choice (4) Response

a.

Yes

b.

Only step 1 is correct

c.

Only step 1 and 2 are correct

d.

No