Q13 of 53 Page 15

The numbers on the six faces of a die are replaced by the letters given below:


In the throw of this die, find the probability of getting


(i) A (ii) B

(i) Sample Space = (A, A, B, C, D, E)


Number of A’s = 2


Probability of getting an A =


(ii) Sample Space = (A, A, B, C, D, E)


Numbher of B’s = 1


Probability of getting a B =


More from this chapter

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11

Find the probability that a number selected from the numbers 1 to 25 is not a prime number when each of the given numbers is equally likely to be selected.

 12

A box contains 20 cards, numbered from 1 to 20. A card is drawn from the box at random. Find the probability that the number on the card drawn is (i) even (ii) prime and (iii) multiple of 3

 14

In a single throw of two dice, find the probability of getting the sum of numbers appearing on the two dice.

(i) greater than 8


(ii) Less than or equal to 12


(iii) equal to 7


(iv) divisible by 3 or 4

 15

Two dice are rolled together. Write all the possible outcomes and find the probability of getting

(i) a number greater than 4 on each die.


(ii) a doubtlet (the same number appearing on each of the die)