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Question

Write a sample space S and number of sample points n(S) for the following experiments. Also write events A, B, C in the set from and write n(A),n(B) and n(C).

From three men and two women, environment committee of two person 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.

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Solution

Given 3 Men 2 Women

Let men be the M1, M2 and M3.

Women be F1 and F2

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

n(S)=10

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

A={M1F1, M1F2, M2F1, M2F2, M3F1, M3F2,F1F2, }

n(A)=7

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

B={M1F1, M1F2, M2F1, M2F2, M3F1, M3F2}

n(B)=6

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

C={M1M2, M1M3, M2M3,}

n(C)=3


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Q. 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).
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Condition for event A : To get at least two heads.
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Condition for event B : The number formed is divisible by 3.
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(5) From three men and two women, environment committee of two persons is to be formed.
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Condition for event B : One man, one woman committee to be formed.
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