Q32 of 53 Page 15

A die is numbered in such a way that its faces show the numbers 1,2,2,3,3,6. It is thrown two times and the total score in two throws is noted. Complete the following table which gives a few values of the total score on the two throws:

Number in first throw



What is the probability that the total score is


(i) even (ii) 6? (iii) at least 6?

Total number of outcomes = 36


(i)Number of even score = 18


Hence, P (even score) =


(ii)Number of times 6 comes = 4


Hence, P (score of 6) =


(ii)Number of times score is 6 or more = 15


Hence, P (score at least 6) =


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(iii) a number greater than 2?


(iv) a number less than 9?

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(i) divisible by 5.


(ii) a number which is a perfect square.

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A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball from the bag is thrice that of a red ball, find the number of blue balls in the bag.