Number System (IMO- Mathematics Olympiad Class 7): Questions 32 - 37 of 81

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Question number: 32

» Number System

MCQ▾

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.

7,4

b.

4,6

c.

4,7

d.

6,4

Question number: 33

» Number System

MCQ▾

Question

An insect crawls up 7 cm every second on an 80 cm vertical rod and then falls down 3 cm over the next second. How many seconds will it take to climb the rod?

Choices

Choice (4) Response

a.

39 seconds

b.

30 seconds

c.

20 seconds

d.

60 seconds

Question number: 34

» Number System

MCQ▾

Question

Which of the following statements is true?

Choices

Choice (4) Response

a.

Zero has no reciprocal

b.

1 and -1 are reciprocal of themselves

c.

The product of two rational numbers is a rational number

d.

All a. , b. and c. are correct

Question number: 35

» Number System

MCQ▾

Question

The product of two rational numbers is 27 . If one of the numbers is 34 , then the other number is________.

Choices

Choice (4) Response

a.

27

b.

36

c.

22

d.

49

Question number: 36

» Number System

MCQ▾

Question

The value of y such that 15 and 3y are equivalent rational numbers is________.

Choices

Choice (4) Response

a.

5

b.

15

c.

15

d.

5

Question number: 37

» Number System

MCQ▾

Question

Simplify 111[12{7+(407+6¯)}+100]

Choices

Choice (4) Response

a.

9

b.

7

c.

6

d.

8

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