Statistics and Probability (IMO- Mathematics Olympiad Class 9): Questions 7 - 14 of 101

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Question number: 7

» Statistics and Probability

MCQ▾

Question

Determine the probability that a digit chosen at random from the digits 1, 2, 3… 9 will be a multiple of 3 is ________

Choices

Choice (4) Response

a.

23

b.

32

c.

13

d.

12

Question number: 8

» Statistics and Probability

MCQ▾

Question

The median of the following numbers 25, 27, 21, 23, 24 is________

Choices

Choice (4) Response

a.

25

b.

21

c.

24

d.

23

Question number: 9

» Statistics and Probability

MCQ▾

Question

The following observations have been arranged in the ascending order. If the median of the data 29, 32, 48, 50, x, x + 2, 72, 78, 84, 95 is 63, then the value of x is ________

Choices

Choice (4) Response

a.

60

b.

61

c.

63

d.

62

Question number: 10

» Statistics and Probability

MCQ▾

Question

If three coins are tossed simultaneously, what is the probability of getting at least two heads?

Choices

Choice (4) Response

a.

3

b.

12

c.

2

d.

34

Question number: 11

» Statistics and Probability

MCQ▾

Question

The mean of 30 items is x and if each item is increased by 5, then its mean will be ________

Choices

Choice (4) Response

a.

15+x

b.

3x

c.

x+5

d.

15x

Question number: 12

» Statistics and Probability

MCQ▾

Question

If the mode of the following data 4, 3, 2, 5, p, 4, 5, 1, 7, 3, 2, 1 is 3, then value of p is ________

Choices

Choice (4) Response

a.

2

b.

3

c.

1

d.

4

Passage

One card id drawn from a well-shuffled deck of 52 cards. Find the probability of drawing

Question number: 13 (1 of 4 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

Question

A king of red color.

Choices

Choice (4) Response

a.

126

b.

152

c.

452

d.

352

Question number: 14 (2 of 4 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

Question

‘10’ of a black suit

Choices

Choice (4) Response

a.

326

b.

126

c.

226

d.

426

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