# IMO- Mathematics Olympiad Class 8: Questions 511 - 517 of 1029

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## Question number: 511

MCQ▾

### Question

If and, then the value of is ________.

### Choices

Choice (4) Response

a.

15

b.

65

c.

85

d.

75

## Question number: 512

MCQ▾

### Question

The value of is ________.

### Choices

Choice (4) Response

a.

8044

b.

2044

c.

4450

d.

1024

## Question number: 513

MCQ▾

The value of

### Choices

Choice (4) Response

a.

15

b.

11

c.

17

d.

16

## Question number: 514

MCQ▾

### Question

Two numbers are in the ratio 5: 7. If each number is increased by 14, the ratio becomes 7: 9. The numbers are________.

### Choices

Choice (4) Response

a.

35, 47

b.

25, 35

c.

35, 25

d.

35, 49

## Question number: 515

MCQ▾

### Question

Number of prime factors in is

### Choices

Choice (4) Response

a.

65

b.

73

c.

70

d.

72

## Question number: 516

Match List-Ⅰ List-Ⅱ▾

### Question

Match the following provided that a and b are any rational numbers different from zero andx, y are any rational numbers.
List-Ⅰ (Uses Of Exponent Rules) List-Ⅱ (Term With Different Base And Same Exponent)

(A)

(i)

(B)

(ii)

(C)

(iii)

### Choices

Choice (4) Response
• (A)
• (B)
• (C)

a.

• (ii)
• (i)
• (iii)

b.

• (i)
• (ii)
• (iii)

c.

• (i)
• (iii)
• (ii)

d.

• (iii)
• (ii)
• (i)

## Question number: 517

MCQ▾

### Question

The value of is________.

### Choices

Choice (4) Response

a.

1

b.

c.

9

d.

7

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