# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 619 - 624 of 929

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## Question number: 619

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MCQ▾

### Question

In the figure , and, if , what is the length of ? With the Given Values Find Length of RS With the given values find length of RS

### Choices

Choice (4) Response

a.

1

b.

4

c.

2

d.

3

## Question number: 620

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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: 621

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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.

56 years

b.

70 years

c.

75 years

d.

41 years

## Question number: 622

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MCQ▾

### Question

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

### Choices

Choice (4) Response

a.

Infinitely many

b.

Exactly Two

c.

Only one

d.

Exactly three

## Question number: 623

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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.

40

b.

42

c.

44

d.

46

## Question number: 624

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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.

2

b.

c.

3

d.