Square and Square Roots (IMO- Mathematics Olympiad Class 8): Questions 10 - 18 of 67

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Question number: 10

» Square and Square Roots

MCQ▾

Question

The value of 2×2 is________.

Choices

Choice (4) Response

a.

2

b.

2i

c.

+2i

d.

Both b. and c. are correct

Question number: 11

» Square and Square Roots

MCQ▾

Question

The least two digit number, which is a perfect square is ________

Choices

Choice (4) Response

a.

4

b.

16

c.

12

d.

9

Question number: 12

» Square and Square Roots

MCQ▾

Question

Find the smallest square number which is exactly divisible by 8, 12, 15, and 20 is, ________

Choices

Choice (4) Response

a.

3600

b.

2500

c.

900

d.

180

Question number: 13

» Square and Square Roots

MCQ▾

Question

Which of the following is not a perfect square?

Choices

Choice (4) Response

a.

100489

b.

5329

c.

23457

d.

12544

Question number: 14

» Square and Square Roots

MCQ▾

Question

If (56+56+56+...)=X , then the value of x is________.

Choices

Choice (4) Response

a.

2

b.

5

c.

4

d.

8

Question number: 15

» Square and Square Roots

MCQ▾

Question

If (42+42+42+...)=X , then the value of x is________.

Choices

Choice (4) Response

a.

3

b.

7

c.

4

d.

5

Question number: 16

» Square and Square Roots

MCQ▾

Question

A number is multiplied by half of itself and then 10 is added to the product. If the final result is 82, then find the original number.

Choices

Choice (4) Response

a.

11

b.

14

c.

12

d.

13

Question number: 17

» Square and Square Roots

MCQ▾

Question

The area of a square field is 2046049 sq. m. The length of each side of the field is ________.

Choices

Choice (4) Response

a.

2.30

b.

5.42

c.

2.50

d.

1.92

Question number: 18

» Square and Square Roots

MCQ▾

Question

The value of 3×3 is________.

Choices

Choice (4) Response

a.

0

b.

3

c.

+3

d.

±3

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