# Statistics and Probability (IMO- Mathematics Olympiad (SOF) Class 9): Questions 85 - 92 of 101

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## Question number: 85

» Statistics and Probability

MCQ▾

### Question

The median of the following numbers 45, 36, 88, 65, 44, 21, 85, 47, 74 is________

### Choices

Choice (4) Response

a.

47

b.

54

c.

88

d.

74

## Passage

The temperature chart of a patient is given below:

## Question number: 86 (1 of 5 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

### Question

The percentage decrease in temperature between 17.00 hrs and 19.00 hrs is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 87 (2 of 5 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

### Question

The average temperature of the patient between 17.00 hrs, 19.00 hrs and 21.00 hrs is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 88 (3 of 5 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

### Question

The percentage increase in temperature between 11.00 hrs and 15.00 hrs is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 89 (4 of 5 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

### Question

The average temperature of the patient between 13.00 hrs, 15.00 hrs and 17.00 hrs is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 90 (5 of 5 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

### Question

The percentage increase in temperature between 9.00 hrs and 15.00 hrs is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 91

» Statistics and Probability

MCQ▾

### Question

A number x is chosen at random from the numbers -3, -2, -1, 0, 1, 2, 3. The probability that is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 92

» Statistics and Probability

MCQ▾

### Question

A box contains 12 balls out of which x are black. If one ball is drawn at random from the box, what is the probability that it will be a black ball? If 6 more black balls are put in the box, the probability of drawing a black ball is now double of what is was before, then x is________

### Choices

Choice (4) Response

a.

3

b.

7

c.

5

d.

2

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