The pupils in a class were asked how many brothers and sister they had. Their answers are shown in the table: |No. brothers & sisters | 0 | 1 No. pupils 234 5 5| 10 | 9| 3 1 If a child is chosen at random find the probability that there are 3 children in their family.

Q: Can I ask here what the example for question number 2 is? Thanks!

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Q: Thanks for the help! I was also wondering how I would know that the answer would be meaningful?

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Q: can you do part 2 of the question and part 3

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A: Let's solve.

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