IMO- Mathematics Olympiad Class 8: Questions 16 - 23 of 1029

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Question number: 16

» Rational Numbers

MCQ▾

Question

If X= 27 , then x is equal to

Choices

Choice (4) Response

a.

27

b.

27

c.

1

d.

0

Question number: 17

» Rational Numbers

MCQ▾

Question

Which of the following statement is false?

Choices

Choice (4) Response

a.

(17×12)1=171×12

b.

Real number is not a rational number

c.

Every point on the number line is not represents a rational number

d.

The product of rational number and its reciprocal is not zero

Question number: 18

» Rational Numbers

MCQ▾

Question

The standard form of 23 is

Choices

Choice (4) Response

a.

23

b.

23

c.

23

d.

23

Question number: 19

» Rational Numbers

MCQ▾

Question

The multiplicative inverse of 2 is

Choices

Choice (4) Response

a.

12

b.

0

c.

2

d.

1

Question number: 20

» Rational Numbers

MCQ▾

Question

Name the property of multiplication of rational numbers illustrated by the given statement.

(25×19)×112=25×(19×112)

Choices

Choice (4) Response

a.

Associativity of multiplication

b.

Distributivity of multiplication over addition

c.

Distrbutivity of addition over multiplication

d.

Commutativity

Question number: 21

» Rational Numbers

MCQ▾

Question

Simplify: 49+53+72+29+13+92

Choices

Choice (4) Response

a.

2

b.

0

c.

1

d.

3

Question number: 22

» Rational Numbers

MCQ▾

Question

The cost of 8 meters rope is Rs. 15. Find its cost per meter.

Choices

Choice (4) Response

a.

1.87

b.

1.52

c.

1.25

d.

2.00

Question number: 23

» Rational Numbers

MCQ▾

Question

We divide additive inverse of 2 by their multiplicative inverse of 2. Then answer is_.

Choices

Choice (4) Response

a.

-1

b.

-4

c.

2

d.

1

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