A box contain 90 discs,which are numbered from 1 to 80 .If one discs is drawn at random from the box,find the probability that it bears a perfect square number.
A box contain 90 discs,which are numbered from 1 to 80 .If one discs is drawn at random from the box,find the probability that it bears a perfect square number.
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Answer:
probability of perfect square no. is 1/10