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.
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1
Answer:
total no. of events =90-2+1=81
no. of fav. events =90-9=81
p(e)=81/89
so the probability that bears two digit no. is 81/89.
no. of fav. events = 4,9,16,25,36,49,64,81
p(e)=8/89
no. of probability which is perfect sq. is 8/89
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