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25-05-2024
Mathematics

Answered

Three new students are going to join Andy and Steven’s homeroom. They try to guess the
gender of the new students. Andy guesses 2 boys and 1 girl while Steven says they will all
be girls.
a Draw a tree diagram to show all the possibilities (sample space).
b What is the probability that Andy is correct?
c What is the probability that Steven is correct?
d What is the probability that both Andy and Steven are wrong?
e What is the probability that at least one of the new students is a boy?

Answer :

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