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that the drawn card is(1)neitherĂkinghĂśraqueet()redqueelCalu10. A box contains 90 discs, numbered from 1 to 90. If one disc is drawn at random from the box.find the probability that it bears () a prime-number less than 23 (i) a perfect square number.

Answer»

Total Numbers=90No. of prime numbers less than 23=8 (2,3,5,7,11,13,17,19)(i)Probability=8/90=4/45No. of perfect square numbers=9(1,4,9,16,25,36,49,64,81)(ii) Probability=9/90=1/10



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