The greatest number of teams that can enter will be 6.
Based on the information given, in order to find the greatest number of teams that can enter, we have to find the highest common factors for both boys and girls. This will be:
Factors of 18 = 1, 2, 3, 6, 9, 18.
Factors of 24 = 1, 2, 3, 4, 6, 8, 12, 16, 24.
Highest common factor = 6
Therefore, the greatest number will be 6.
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