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RD Sharma - Volume 2

Exercise 31.1

1 2 A 2 B 3 4 5 6 7 8 9

Exercise 31.2

1 2 3 4 5 6 A 6 B 6 C 7 8 9 10 11 12 13 14

Exercise 31.3

1 2 3 4 5 A 5 B 5 C 5 D 6 7 8 A 8 B 8 C 9 A 9 B 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

Exercise 31.4

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Exercise 31.5

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

Exercise 31.6

1 2 3 4 5 6 7 8 9 10 11 12 13

Exercise 31.7

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

Very short answer

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MCQ

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Q. 19

Mark the correct alternative in each of the following:

A bag contains 5 brown and 4 white socks. A man pulls out two socks. The probability that these are of the same colour is

A. 5/108

B. 18/108

C. 30/108

D. 48/108

Class 12th RD Sharma - Volume 2 31. Probability

Answer :

2 brown socks from 5 can be chosen in ways, similarly 2 white socks can be selected in 4 ways.

P(same colour)

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