Sadhana Bhadoriya

Ex – 14.1 Que No. 24 Q.24) A die is thrown twice. What is the probability that [Hint : Throwing a die twice and throwing two dice simultaneously are treated as the same experiment] Solution:-

Ex – 14.1 Que No. 23 Q.23) A game consists of tossing a one rupee coin 3 times and noting its outcome each time. Hanif wins if all the tosses give the same result i.e., three heads or three tails, and loses otherwise. Calculate the probability that Hanif will lose the game. Solution:-

Ex – 14.1 Que No. 22 Q.22) Refer to Example 13. Solution:-

Ex – 14.1 Que No. 21 Q.21) A lot consists of 144 ball pens of which 20 are defective and the others are good. Nuri will buy a pen if it is good, but will not buy if it is defective. The shopkeeper draws one pen at random and gives it to her. What is

Ex – 14.1 Que No. 20 Q.20) Suppose you drop a die at random on the rectangular region shown in Fig. 14.6. What is the probability that it will land inside the circle with diameter 1m? Solution:-

Ex – 14.1 Que No. 19 Q.19) A child has a die whose six faces show the letters as given below: The die is thrown once. What is the probability of getting (i) A? (ii) D? Solution:-

Ex – 14.1 Que No. 18 Q.18) A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears Solution:-

Ex – 14.1 Que No. 17 Q.17) Solution:-

Ex – 14.1 Que No. 16 Q.16) . 12 defective pens are accidentally mixed with 132 good ones. It is not possible to just look at a pen and tell whether or not it is defective. One pen is taken out at random from this lot. Determine the probability that the pen taken out is

Ex – 14.1 Que No. 15 Q.15) Five cards—the ten, jack, queen, king and ace of diamonds, are well-shuffled with theirface downwards. One card is then picked up at random. Solution:-