A couple decides to have 6 children. If they succeed in having 6 children and each child is equally likely to be a boy or a girl, What is the probability that they will have exactly 3 girls and 3 boys?  Choose the correct choice from the following options:
A) 1  B) 9/64  C) 1/8  D) 3/16  E) 9/32
Sample space = 2^6 = 64.   Favourable events = {bbbggg}, {bgbgbg}, {bgbggb}, {bggbbg} {gggbbb}, {gbgbgb}, {gbbggb}.{gbgbbg}{gbbgbg}   Probability = 9/64 = 9/64   Ans (9/64).
<result>B</result>
A couple decides to have 6 children. If they succeed in having 6 children and each child is equally likely to be a boy or a girl, What is the probability that they will have exactly 3 girls and 3 boys?