Statistics & Probability (IMO- Mathematics Olympiad Class 10): Questions 39 - 45 of 80

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Question number: 39

» Statistics & Probability

MCQ▾

Question

Two dice are thrown simultaneously. The probability of getting a total 5, 6 or 7 is ________

Choices

Choice (4) Response

a.

125

b.

127

c.

712

d.

512

Question number: 40

» Statistics & Probability

MCQ▾

Question

The mean of five numbers is 18. If one number is excluded, then their mean is 16, the excluded number is ________

Choices

Choice (4) Response

a.

25

b.

26

c.

28

d.

24

Question number: 41

» Statistics & Probability

MCQ▾

Question

The average age of 5 teachers is 28 years. If one teacher is excluded the mean gets reduced by 2 years. The age of the excluded teacher is ________

Choices

Choice (4) Response

a.

33 years

b.

36 years

c.

35 years

d.

26 years

Question number: 42

» Statistics & Probability

MCQ▾

Question

Two dice are thrown simultaneously. The probability of getting a doublet or a total of 8 is ________

Choices

Choice (4) Response

a.

518

b.

418

c.

279

d.

107

Question number: 43

» Statistics & Probability

MCQ▾

Question

When two dice are thrown, the probability of getting a prime number as the sum is ________

Choices

Choice (4) Response

a.

125

b.

512

c.

716

d.

614

Question number: 44

» Statistics & Probability

MCQ▾

Question

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

Choices

Choice (4) Response

a.

136

b.

127

c.

613

d.

712

Question number: 45

» Statistics & Probability

MCQ▾

Question

A bag contains 6 blue and 4 green marbles. If a marble is drawn at random from the bag, the probability that the marble drawn is green, is ________

Choices

Choice (4) Response

a.

45

b.

110

c.

25

d.

15

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