# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 687 - 695 of 929

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## Question number: 687

Edit
MCQ▾

### Question

Given that is a solution of . The other solutions are ________.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 688

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MCQ▾

### Question

A card is drawn at random from a well shuffled pack of 52 cards. The probability that the ‘9’ of red color card is ________

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 689

Edit
MCQ▾

=

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 690

Edit
MCQ▾

### Question

If and , then value of y when , is________.

### Choices

Choice (4)Response

a.

-2

b.

-1

c.

2

d.

1

## Passage

A Train is going on a long journey for 20 hours, starting at 3.00 hrs. The speed of the car at different hours is given below:

 Time (in hrs): 3 5 8 10 12 15 18 20 23 Speed (in km/hour): 60 70 90 50 60 75 60 30 60

From the above table answer the following questions.

## Question number: 691 (1 of 3 Based on Passage) Show Passage

Edit
MCQ▾

### Question

The percentage of increase in speed during 10.00 hrs and 12.00 hrs is ________

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 692 (2 of 3 Based on Passage) Show Passage

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MCQ▾

### Question

The percentage of decrease in speed during 18.00 hrs and 20.00 hrs is ________

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 693 (3 of 3 Based on Passage) Show Passage

Edit
MCQ▾

### Question

The average speed (in km/hour) between 10.00 hrs, 12.00 hrs and 15.00 hrs is ________

### Choices

Choice (4)Response

a.

68

b.

62

c.

63

d.

57

## Question number: 694

Edit
MCQ▾

### Question

If means X is the wife of Y, means X is the son of Y and means X is the sister of Y, which of the following would mean that A is the daughter of B?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 695

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MCQ▾

### Question

Mean marks scored by 40 students were found to be 60. Later it was observed that a score of 48 was misread as 84. Then the correct mean is ________

### Choices

Choice (4)Response

a.

59

b.

58

c.

59.1

d.

58.2

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