Question

1. There are eight simple events that are possible when a couple has three children, where b= boy and g= girl. The combinations possible are: bbb, bbg, bgb, bgg, gbb, gbg, ggb, ggg. Assume that boys and girls are equally likely, so that the eight simple events are equally likely. Find the probability that when a couple has three children, there is exactly 1 girl. Express your answer as either a fraction or decimal.

2. Using the same sample as Question 2 (combinations of boys/girls), After identifying the combinations possible for a couple having 4 children, find the probability of getting 3 girls and 1 boy (in any order). Express your answer as either a fraction or decimal.

Answer 1

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