Q. 84.9( 16 Votes )

A box contains 90

Answer :

Total numbers of elementary events are: 90


Let E be the event of getting a prime number less than 23


Favourable numbers are: 2, 3, 5, 7, 11, 13, 17, 19


Numbers of favourable outcomes = 8


P (E) = 8/90 = 4/45


4/45

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