IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 382 - 388 of 1022

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Question number: 382

» Comparing Quantities

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MCQ▾

Question

When a number is reduced by 4, it becomes 80 % of itself. Find the number.

Choices

Choice (4) Response

a.

20

b.

50

c.

40

d.

30

Question number: 383

» Comparing Quantities

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MCQ▾

Question

A man purchased a bag of tea containing 30 kg for Rs. 345. He sold it at the rate of Rs. 13.75 per kg. Then the profit or loss in % is ________.

Choices

Choice (4) Response

a.

19.57 % loss

b.

21.13 % gain

c.

19.57 % gain

d.

21.13 % loss

Question number: 384

» Algebraic Expressions

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MCQ▾

Question

Addition of is________.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 385

» Exponents and Powers

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MCQ▾

Question

By what number should be divided so that the quotient is ?

Choices

Choice (4) Response

a.

3

b.

c.

d.

2

Question number: 386

» Exponents and Powers

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MCQ▾

Question

If , then will be ________.

Choices

Choice (4) Response

a.

0.125

b.

0.0625

c.

0.25

d.

1

Question number: 387

» Algebraic Expressions

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MCQ▾

Question

An object is dropped from a small plane flying at a height of 800 cm above the ground. As the object falls, d, its distance above the ground after t seconds is given by the formula below

How far above the ground is the object, when it has fallen for 3 seconds?

Choices

Choice (4) Response

a.

345 cm

b.

656 cm

c.

575 cm

d.

455 cm

Question number: 388

» Exponents and Powers

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MCQ▾

Question

By what number should be divided so that the quotient is ?

Choices

Choice (4) Response

a.

b.

10

c.

d.

6