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The Infinity Club consists of 5 boys and 6 girls. How many working groups of 5 people can be formed with:

a)no restrictions (my answer is 11C5)
b)all boys (is this correct 5C5)
c)all girls (answer 6C5)
d)more girls than boys (6C4x5C1 +6C3x5C2)
e)more boys than girls (5C4x6C1+5C3x6C2)

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