# Statistics and Probability (IMO- Mathematics Olympiad Class 9): Questions 48 - 53 of 101

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## Passage

A car is going on a long journey for 16 hours, starting at 5.00 hrs. The speed of the car at different hours is given below:

 Time (in hrs): 5 7 9 11 13 17 15 19 21 Speed (in km/hour): 40 50 60 80 70 65 75 60 50

From the above table answer the following questions.

## Question number: 48 (2 of 3 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

### Question

The percentage of increase in speed during 9.00 hrs and 11.00 hrs is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 49 (3 of 3 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

### Question

The percentage of decrease in speed during 19.00 hrs and 21.00 hrs is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 50

» Statistics and Probability

MCQ▾

### Question

The median of the observation 30, 91, 0, 64, 42, 80, 30, 5, 117, 71 is ________

### Choices

Choice (4) Response

a.

53

b.

51

c.

52

d.

52.5

## Question number: 51

» Statistics and Probability

MCQ▾

### Question

A die is thrown once. The probability of getting a number greater than 3 is ________

### Choices

Choice (4) Response

a.

b.

c.

0

d.

## Question number: 52

» Statistics and Probability

MCQ▾

### Question

The average of n numbers is A. if is replaced by is replaced by , …, then the new average is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 53

» Statistics and Probability

MCQ▾

### Question

The King, queen and jack of clubs are removed from a deck of 52 cards and then well-shuffled. One card id selected from the remaining cards. The probability of getting a black card is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

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