# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 687 - 695 of 931

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## Question 687

Edit

### Question

MCQ▾

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

### Choices

Choice (4)Response
a.
b.
c.
d.

## Question 688

Edit

### Question

MCQ▾

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 689

Edit

MCQ▾

=

### Choices

Choice (4)Response
a.
b.
c.
d.

## Question 690

Edit

### Question

MCQ▾

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 691 (1 of 3 Based on Passage)

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### Question

MCQ▾

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

### Choices

Choice (4)Response
a.
b.
c.
d.

## Question 692 (2 of 3 Based on Passage)

Edit

### Question

MCQ▾

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

### Choices

Choice (4)Response
a.
b.
c.
d.

## Question 693 (3 of 3 Based on Passage)

Edit

### Question

MCQ▾

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 694

Edit

### Question

MCQ▾

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 695

Edit

### Question

MCQ▾

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