Rational Numbers (IMO- Mathematics Olympiad Class 8): Questions 48 - 55 of 66

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Question number: 48

» Rational Numbers

MCQ▾

Question

The value of a for which the two rational numbers a5 , 315 are equivalent, is_.

Choices

Choice (4) Response

a.

13

b.

30

c.

5

d.

31

Question number: 49

» Rational Numbers

MCQ▾

Question

A rational number between 13 and 12 is

Choices

Choice (4) Response

a.

0.45

b.

0.49

c.

0.34

d.

All a. , b. and c. are correct

Question number: 50

» Rational Numbers

MCQ▾

Question

The product of two rational numbers is 20. If one of the number is 12, find the other?

Choices

Choice (4) Response

a.

53

b.

12

c.

32

d.

23

Question number: 51

» Rational Numbers

MCQ▾

Question

What should be added to (2313) to get 1?

Choices

Choice (4) Response

a.

13

b.

23

c.

23

d.

14

Question number: 52

» Rational Numbers

MCQ▾

Question

The number which is divided by 94 to get 32 is

Choices

Choice (4) Response

a.

94

b.

278

c.

14

d.

23

Question number: 53

» Rational Numbers

MCQ▾

Question

Name the property of rational number illustrated by the given statement.

a+(b+c)=(a+b)+c

Choices

Choice (4) Response

a.

Distributive

b.

Associativity

c.

commutative

d.

All of the above

Question number: 54

» Rational Numbers

MCQ▾

Question

Simplify: (613×132)(1×12)+(12×14)

Choices

Choice (4) Response

a.

(198)

b.

(278)

c.

(278)

d.

(98)

Question number: 55

» Rational Numbers

MCQ▾

Question

Which of the following statement is false?

Choices

Choice (4) Response

a.

The product of two positive rational number is always positive

b.

The product of a two negative rational number is positive

c.

Zero has not a reciprocal

d.

Real number is a rational number

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