IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 215 - 224 of 1042

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Question 215

Question

MCQ▾

The value of is________.

Choices

Choice (4)Response

a.

14

b.

15

c.

12

d.

10

Question 216

Question

MCQ▾

The value of is ________.

Choices

Choice (4)Response

a.

8.5

b.

2.5

c.

4.00

d.

7.5

Question 217

Question

MCQ▾

By what least number must 648 be multiplied to make it perfect cube?

Choices

Choice (4)Response

a.

10

b.

4

c.

5

d.

9

Question 218

Question

MCQ▾

In the number a-4b, a is the smallest two digit perfect cube and a՚s unit digit exceeds b by 3. then find the sum of the number and its cube root is________.

Choices

Choice (4)Response

a.

2713

b.

2754

c.

2758

d.

2750

Question 219

Question

MCQ▾

The smallest number by which 225 must be multiplied so that the product is a perfect cube is________.

Choices

Choice (4)Response

a.

10

b.

15

c.

11

d.

9

Question 220

Question

MCQ▾

The volume of a cube whose surface area is , is________.

Choices

Choice (4)Response

a.

b.

c.

d.

Question 221

Question

MCQ▾

If , then is equal to________.

Choices

Choice (4)Response

a.

b.

c.

d.

Question 222

Question

MCQ▾

=

Choices

Choice (4)Response

a.

b.

c.

d.

Question 223

Question

MCQ▾

If , then is equal to________.

Choices

Choice (4)Response

a.

b.

c.

d.

Question 224

Question

MCQ▾

By what least number must 3125 be multiplied to make it perfect cube?

Choices

Choice (4)Response

a.

5

b.

4

c.

10

d.

25