# IMO- Mathematics Olympiad Class 9: Questions 621 - 626 of 919

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## Question number: 621

MCQ▾

### Question

In the figure , and, if , what is the length of ?

### Choices

Choice (4) Response

a.

1

b.

2

c.

3

d.

4

## Question number: 622

MCQ▾

### Question

Two dice are thrown simultaneously. The probability of getting a multiple of 2 on one die and a multiple of 3 on the other is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 623

MCQ▾

### Question

The age of Sandhya’s father is 5 times of his age. If 6 years ago, father’s age was 8 times of the age of his son at that time. What is Sandhya’s father present age?

### Choices

Choice (4) Response

a.

75 years

b.

70 years

c.

56 years

d.

41 years

## Question number: 624

MCQ▾

### Question

Give the equations of two lines passing through. How many more such lines are there?

### Choices

Choice (4) Response

a.

Exactly three

b.

Infinitely many

c.

Only one

d.

Exactly Two

## Question number: 625

MCQ▾

### Question

The following observations have been arranged in the ascending order. If the median of the data 13, 26, 32, 37, x + 2, x + 4, 62, 68, 74, 85 is 43, then the value of x is ________

### Choices

Choice (4) Response

a.

44

b.

42

c.

40

d.

46

## Question number: 626

MCQ▾

### Question

The probability of guessing the correct answer to a certain test question is . If the probability of not guessing the correct answer to this question is , then x = ________

### Choices

Choice (4) Response

a.

b.

2

c.

3

d.

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