IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 115 - 124 of 1040

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Question number: 115

» Linear Equations in One Variable

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MCQ▾

Question

If the angles of a triangle are in the ratio 3: 2: 1, then the difference between the greatest and smallest angles is_.

Choices

Choice (4)Response

a.

b.

c.

d.

60

Question number: 116

» Linear Equations in One Variable

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MCQ▾

Question

A number consists of two digits whose sum is 10. If 18 is added to the number, the digits are interchanged. The number is_.

Choices

Choice (4)Response

a.

62

b.

26

c.

64

d.

46

Question number: 117

» Linear Equations in One Variable

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MCQ▾

Question

The value of for which is_.

Choices

Choice (4)Response

a.

21

b.

c.

20

d.

Question number: 118

» Linear Equations in One Variable

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MCQ▾

Question

The length of a rectangle is 5 m less than three times its breadth. The length and breadth of the rectangle if its perimeter is 150 m, is_.

Choices

Choice (4)Response

a.

55m, 30m

b.

20m, 50m

c.

55m, 20m

d.

30m, 20m

Question number: 119

» Linear Equations in One Variable

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MCQ▾

Question

A man is 6 years older than his wife and his wife is now thrice as old as their daughter, who is 10 years old. How old the man when his daughter was born?

Choices

Choice (4)Response

a.

26 years

b.

20 years

c.

22 years

d.

25 years

Question number: 120

» Linear Equations in One Variable

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MCQ▾

Question

Solution of the equation is_.

Choices

Choice (4)Response

a.

5

b.

9

c.

10

d.

3

Question number: 121

» Square and Square Roots

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MCQ▾

Question

Squares of an even numbers is always________.

Choices

Choice (4)Response

a.

Odd

b.

Even

c.

All of the above

d.

None of the above

Question number: 122

» Square and Square Roots

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MCQ▾

Question

If , then can be

Choices

Choice (4)Response

a.

13

b.

12

c.

11

d.

15

Question number: 123

» Square and Square Roots

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MCQ▾

Question

Square root of 2401 is________.

Choices

Choice (4)Response

a.

87

b.

78

c.

49

d.

76

Question number: 124

» Square and Square Roots

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MCQ▾

Question

A number is multiplied by itself and then 15 is subtracted from the product. If the final result is 2545, then find the original number.

Choices

Choice (4)Response

a.

30

b.

31

c.

13

d.

32

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