what is the probability of getting a perfect square for 4- digit number
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Total 4-digit no's that are possible, 10000-1000 = 9000
Perfect squares of 4-digit no. starts from 1024 which is the square of 32 and ends in 9801 which is the square of 99...
So No. of 4-digit numbers which are perfect squares are 99-31 = 68
Prob. will be = 68/9000 = 0.00755 = 0.0076
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