IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 121 - 130 of 1042

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Question 121

Question

MCQ▾

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 122

Question

MCQ▾

If , then can be

Choices

Choice (4)Response

a.

13

b.

12

c.

11

d.

15

Question 123

Question

MCQ▾

Square root of 2401 is________.

Choices

Choice (4)Response

a.

87

b.

78

c.

49

d.

76

Question 124

Question

MCQ▾

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

Question 125

Question

MCQ▾

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

Choices

Choice (4)Response

a.

2.00

b.

2.50

c.

4.00

d.

1.92

Question 126

Question

MCQ▾

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

Choices

Choice (4)Response

a.

15

b.

20

c.

11

d.

10

Question 127

Question

MCQ▾

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

Choices

Choice (4)Response

a.

500

b.

180

c.

100

d.

900

Question 128

Question

MCQ▾

The value of is________.

Choices

Choice (4)Response

a.

0

b.

c.

d.

Question 129

Question

MCQ▾

If , then equals________.

Choices

Choice (4)Response

a.

4

b.

1

c.

3

d.

2

Question 130

Question

MCQ▾

The value of is________.

Choices

Choice (4)Response

a.

2

b.

c.

d.

Both b. and c. are correct