# IMO- Mathematics Olympiad Class 8: Questions 216 - 223 of 1029

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## Question number: 216

MCQ▾

### Question

The value of is ________.

### Choices

Choice (4) Response

a.

2.5

b.

4.00

c.

7.5

d.

8.5

## Question number: 217

MCQ▾

### Question

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

### Choices

Choice (4) Response

a.

9

b.

5

c.

4

d.

10

## Question number: 218

MCQ▾

### Question

In the number a4b, 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.

2750

c.

2758

d.

2754

## Question number: 219

MCQ▾

### Question

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

### Choices

Choice (4) Response

a.

15

b.

9

c.

10

d.

11

## Question number: 220

MCQ▾

### Question

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

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 221

MCQ▾

### Question

If , then is equal to________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 222

MCQ▾

=

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 223

MCQ▾

### Question

If , then is equal to________.

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page