IMO- Mathematics Olympiad Class 8: Questions 119 - 127 of 1029

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Question number: 119

» Linear Equations in One Variable

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.

25 years

c.

22 years

d.

20 years

Question number: 120

» Linear Equations in One Variable

MCQ▾

Question

Solution of the equation Equation is_.

Choices

Choice (4) Response

a.

5

b.

9

c.

10

d.

3

Question number: 121

» Square and Square Roots

MCQ▾

Question

Squares of an even numbers is always________.

Choices

Choice (4) Response

a.

Even

b.

Odd

c.

All of the above

d.

None of the above

Question number: 122

» Square and Square Roots

MCQ▾

Question

If Equation , then Equation can be

Choices

Choice (4) Response

a.

12

b.

11

c.

13

d.

15

Question number: 123

» Square and Square Roots

MCQ▾

Question

Square root of 2401 is________.

Choices

Choice (4) Response

a.

76

b.

78

c.

49

d.

87

Question number: 124

» Square and Square Roots

MCQ▾

Question

A number is multiplied by Equation 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.

13

b.

30

c.

32

d.

31

Question number: 125

» Square and Square Roots

MCQ▾

Question

The area of a square field is Equation sq. m. The length of each side of the field is ________.

Choices

Choice (4) Response

a.

4.00

b.

1.92

c.

2.00

d.

2.50

Question number: 126

» Square and Square Roots

MCQ▾

Question

The number must be subtracted from 13245 to get a perfect square is________.

Choices

Choice (4) Response

a.

11

b.

20

c.

15

d.

10

Question number: 127

» Square and Square Roots

MCQ▾

Question

Find the smallest square number which is exactly divisible by 15, 25, and 30 is, ________

Choices

Choice (4) Response

a.

100

b.

180

c.

500

d.

900

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