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Real Numbers

Question
CBSEENMA10009340

A die is thrown once. Find the probablity of setting ‘a’ prime number.

Solution

If a die is thrown once, then
S = {1,2,3,4,5,6} i.e. n(s) = 6
Let A be favourable outcomes of setting a prime number, then
A = {2,3,5} i.e.    n(4) = 3
Therefore, P(A) = fraction numerator n left parenthesis A right parenthesis over denominator n left parenthesis S right parenthesis end fraction equals 3 over 6 equals 1 half