Statistics and Probability (IMO- Mathematics Olympiad Class 9): Questions 62 - 69 of 101

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Question number: 62

» Statistics and Probability

MCQ▾

Question

A card is drawn from a well-shuffled pack of 52 cards. The probability that the card drawn neither a club nor a spade is ________

Choices

Choice (4) Response

a.

13

b.

2

c.

3

d.

12

Passage

Cards marked with the number 5 to 104 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: 63 (1 of 3 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

Question

A prime number less than 30.

Choices

Choice (4) Response

a.

225

b.

125

c.

110

d.

320

Question number: 64 (2 of 3 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

Question

A number less than 21

Choices

Choice (4) Response

a.

17100

b.

3100

c.

1750

d.

1370

Question number: 65 (3 of 3 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

Question

A number which is a perfect square

Choices

Choice (4) Response

a.

350

b.

3100

c.

3100

d.

225

Question number: 66

» Statistics and Probability

MCQ▾

Question

Average of 15 numbers is 45. What should be added as 20th number to make the average 60?

Choices

Choice (4) Response

a.

410

b.

525

c.

758

d.

672

Question number: 67

» Statistics and Probability

MCQ▾

Question

One card is drawn from a well-shuffled deck of 52 cards. The probability of neither a heart nor a red king is ________

Choices

Choice (4) Response

a.

119

b.

2619

c.

1926

d.

126

Question number: 68

» Statistics and Probability

MCQ▾

Question

A die is thrown once. The probability of getting an odd number is ________

Choices

Choice (4) Response

a.

2

b.

12

c.

13

d.

0

Question number: 69

» Statistics and Probability

MCQ▾

Question

The probability of guessing the correct answer to a certain test question is x12 . If the probability of not guessing the correct answer to this question is 45 , then x = ________

Choices

Choice (4) Response

a.

15

b.

127

c.

125

d.

5

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