Q. 353.5( 2 Votes )

Find the probability that a number selected from the number 1 to 25 is not a prime number when each of the given numbers is equally likely to be selected.

Answer :

Total number of possible outcomes, n(S) = 25


Number of events of getting a prime number, n(E) = 9



Number of events of not getting a prime number = 1 – P(E)



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