Statistics and Probability (IMO- Mathematics Olympiad Class 9): Questions 15 - 22 of 101

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Passage

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

Question number: 15 (3 of 4 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

Question

A king of red color.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 16 (4 of 4 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

Question

‘10’ of a black suit

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 17

» Statistics and Probability

MCQ▾

Question

Mean marks scored by 50 students were found to be 70. Later it was observed that a score of 45 was misread as 54. Then the correct mean is ________

Choices

Choice (4) Response

a.

69

b.

69.82

c.

79.82

d.

59

Question number: 18

» Statistics and Probability

MCQ▾

Question

The average of 15 numbers is calculated as 20. It is discovered later on that while calculating the average one number, namely 41 was wrongly read as 31. The correct average is________

Choices

Choice (4) Response

a.

20.6

b.

19.5

c.

13.5

d.

16.5

Question number: 19

» Statistics and Probability

MCQ▾

Question

The mean, median and mode of the following numbers 7, 4, 3, 5, 6, 3, 3, 2, 4, 3, 4, 3, 3, 4, 4, 3, 2, 2, 4, 3, 5, 4, 3, 4, 3, 4, 3, 1, 2, 3 are________

Choices

Choice (4) Response

a.

3, 3, 3

b.

3.47, 3, 3

c.

5, 4, 3

d.

4, 3, 3

Passage

Cards marked with the number 2 to 101 are placed in a box and mixed thoroughly. One card is drawn from this box. Find the probability that the number on the card is

Question number: 20 (1 of 3 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

Question

A prime number less than 20.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 21 (2 of 3 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

Question

A number which is a perfect square

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 22 (3 of 3 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

Question

A number less than 14

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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