Q1 of 36 Page 121

Write sample space ‘S’ and number of sample point n(S) for each of the following experiments. Also write events A, B, C in the set form and write n(A), n(B), n(C).

From three men and two women, environment committee of two persons is to be formed.


Condition for event A : There must be at least one woman member.


Condition for event B : One man, one woman committee to be formed


Condition for event C : There should not be a woman member.

Sample Space, S = {M1M2, M1M3, M1F1, M1F2, M2M3, M2F1, M2F2, M3F1, M3F2, F1F2}


Number of sample points, n(S) = 10


There must be at least one woman member , A = {M1F1, M1F2, M2F1, M2F2, M3F1, M3F2, F1F2}


n(A) = 7


One man, one woman committee to be formed , B = {M1F1, M1F2, M2F1, M2F2, M3F1, M3F2}


n(B) = 6


There should not be a woman member , C = {M1M2, M1M3, M2M3}


n(C) = 3


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