A box contains cards numbered from 15 to 130. A card is drawn at random from the box.
Find the probability that the number on the card drawn is ;
a) a perfect square number ; b) a multiple of 5.
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Answer:
Total number of cards are 130-15+1=116
Perfect squared numbers from 15 to 130 are 16,25,36,49,64,81,100 and 121
The number of such cards are 8
Therefore answer (a) will be 8/116=2/29
Multiple of 5 cards are from 15 to 130 therefore it will be 24
Therefore answer (b) will be 24/116=6/29
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