IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 28 - 32 of 1022

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Question number: 28

» Number System

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MCQ▾

Question

A tank contains 500 liters of water. Due to a small hole in the tank, the quantity of water is decreasing at the rate of 9 liters every hour. What will be the quantity of the water in the tank after 10 hours?

Choices

Choice (4) Response

a.

491 liters

b.

400 liters

c.

410 liters

d.

90 liters

Question number: 29

» Number System

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Question

For any two rational numbers x and y which of the following are correct, if x is positive and y is negative?

1. X < Y 2. X = Y 3. X > Y

Choices

Choice (4) Response

a.

Only 1 and 2 are correct

b.

Only 3 is correct

c.

Only 2 and 3 are correct

d.

Question does not provide sufficient data or is vague

Question number: 30

» Number System

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Question

Which of the following statements is true?

Choices

Choice (4) Response

a.

is a rational number

b.

Irrational number is not written in ration form

c.

2 is a prime number

d.

All a. , b. and c. are correct

Question number: 31

» Number System

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Question

Which of the following number sentence below best describes the problem shown on the number line?

A number line is given

A Number Line is Given

Find out the number sentence that describes the problem given on the number line

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 32

» Number System

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Question

In a magic square each row, column and diagonal have the same sum, then the values of A and B are respectively________.

A magic square is given

Find out the missing values of magic square if each row, column and diagonal have the same sum

1

-10

0

A

-3

-2

-6

4

B

Choices

Choice (4) Response

a.

b.

c.

d.