Pairs
From the five girls and four boys teachers have to choose one pair of boy and girl.
A) How many such pairs of (M + F)?
B) How many pairs where only boys (M + M)?
C) How many are all possible pairs?
Correct result:
A) How many such pairs of (M + F)?
B) How many pairs where only boys (M + M)?
C) How many are all possible pairs?
Correct result:

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