Question

A squad of 20, which includes 2 sets of twins, is available for selection for a cricket team of 11 players. Calculate the number of different teams that can be selected if:
i. There are no restrictions
ii. Both sets of twins are selected
iii. one set of twins is selected but neither twin from the other set is selected
iv. exactly one twin from each set is selected

Answer 1

Step-by-step explanation:

There is no restriction

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Answer 2

Answer:

first select one of the pairs of twins .... C(2,1) = 2

So in effect 2 players are chosen but 4 players are taken out of the picture, we need 9 more from the remaining 16 ----- C(16,9)