IMO- Mathematics Olympiad Class 9: Questions 73 - 79 of 919

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Question number: 73

» Number System

MCQ▾

Question

The ascending order of the surds 23,36,49 is________.

Choices

Choice (4) Response
a.

49,23,36

b.

23,36,49

c.

49,36,23

d.

36,49,23

Question number: 74

» Number System

MCQ▾

Question

On simplifying 777775×777777+1(777776)2+888885×888887+1(888886)2 , we get ________.

Choices

Choice (4) Response
a.

4

b.

3

c.

2

d.

1

Question number: 75

» Number System

MCQ▾

Question

1.654654……. . can be expressed in rational form as ________.

Choices

Choice (4) Response
a.

999551

b.

551999

c.

154999

d.

551333

Question number: 76

» Number System

MCQ▾

Question

If both ‘a’ and ‘b’ are rational numbers, then ‘a’ and ‘b’ from 353+25=a5b , are ________.

Choices

Choice (4) Response
a.

a=911,b=1911

b.

a=1911,b=911

c.

a=1011,b=2111

d.

a=211,b=811

Question number: 77

» Number System

MCQ▾

Question

The rationalizing factor of a2b3c45 is ________.

Choices

Choice (4) Response
a.

a3b2c4

b.

a3b2c5

c.

a3b2c3

d.

a3b2c

Question number: 78

» Number System

MCQ▾

Question

If x1x=3 then the value of x2+1x2

Choices

Choice (4) Response
a.

5

b.

2

c.

20

d.

11

Question number: 79

» Number System

MCQ▾

Question

If N=93+9+39+1 , then N equals________.

Choices

Choice (4) Response
a.

0.78

b.

26

c.

356

d.

7+45

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