Q24 of 128 Page 13

A bag contains 3 red balls and 5 black balls. A ball is drawn at random form the bag. What is the probability that the ball drawn is:

(i) red


(ii) black

Total number of possible outcomes, n(S) = 8


(i) Number of possible outcomes of drawing a red ball, n(E) = 3



(ii) Number of possible outcomes of drawing a black ball, n(E) = 5



More from this chapter

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22

One card is drawn from a well shuffled deck of 52 cards. Find the probability of getting:

(i) a king of red suit


(ii) a face card


(iii) a red face card


(iv) a queen of black suit


(v) a jack of hearts


(vi) a spade

 23

Five cards – ten, jack, queen, king and an ace of diamonds are shuffled face downwards. One card is picked at random.

(i) What is the probability that the card is a queen?


(ii) If a king is drawn first and put aside, what is the probability that the second card picked up is the (a) ace? (b) king?

 25

A bag contains cards which are numbered from 2 to 90. A card is drawn at random from the bag. Find the probability that it bears

(i) a two digit number


(ii) a number which is a perfect square

 26

A game of chance consists of spinning an arrow which is equally likely to come to rest pointing to one of the number 1, 2, 3,…, 12 as shown in Fig. 13.3. What is the probability that it will point to:


(i) 10?


(ii) an odd number?


(iii) a number which is multiple of 3?


(iv) an even number?