Statistics and Probability (IMO- Mathematics Olympiad Class 9): Questions 1 - 6 of 101

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Question number: 1

» Statistics and Probability

MCQ▾

Question

A die is rolled 10, 500 times. The frequency of each outcome is shown in the table. What is the empirical probability of the outcomes of multiples of 3?

Define the die is rolled 10,500 times

Define the Die Is Rolled 10, 500 Times

Define the die is rolled 10, 500 times and find the probability of the outcomes of multiples of 3

Choices

Choice (4) Response
a.

11533459

b.

115310500

c.

11533500

d.

3459105000

Question number: 2

» Statistics and Probability

MCQ▾

Question

Two dice are thrown. What is the probability of obtaining a total of 10 or 11?

Choices

Choice (4) Response
a.

1036

b.

236

c.

365

d.

536

Question number: 3

» Statistics and Probability

MCQ▾

Question

The median of the following numbers 99, 54, 78, 65, 35, 45, 66 is________

Choices

Choice (4) Response
a.

66

b.

35

c.

54

d.

65

Question number: 4

» Statistics and Probability

MCQ▾

Question

The mean weight of 80 students in a class is 60 kg. The mean weight of boys is 70 kg while that of the girls is 50 kg. the number of boys and girls are________

Choices

Choice (4) Response
a.

35, 75

b.

45, 35

c.

40, 40

d.

10, 30

Question number: 5

» Statistics and Probability

MCQ▾

Question

If a number x is chosen at random from the numbers 1, 2, 3 and the number y is selected from 1, 4, 9, and then P(xy<9) is________

Choices

Choice (4) Response
a.

92

b.

29

c.

95

d.

59

Question number: 6

» Statistics and Probability

MCQ▾

Question

A contractor employed 18 labourers at Rs. 12 each per day, 10 labourers at Rs. 13.50 each per day, 5 labourers at Rs. 25 each per day and 2 labourers at Rs. 42 each per day. The average wages paid is ________

Choices

Choice (4) Response
a.

Rs. 28

b.

Rs. 24

c.

Rs. 20

d.

Rs. 16

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