a)no restrictions (my answer is 11C5) -- correct
b)all boys (is this correct 5C5) -- correct
c)all girls (my answer 6C5) -- correct
d)more girls than boys (answer 6C4x5C1 +6C3x5C2)?
---- more girls than boys ---> 3G,2B - 4G,1B - 5G
= C(6,3)xC(5,2) + C(6,4)xC(5,1) + C(6,5)
e)more boys than girls --- wrong
--- do it the same way as I showed you in d)
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 (my answer 6C5)
d)more girls than boys (answer 6C4x5C1 +6C3x5C2)?
e)more boys than girls (5C4x6C1+5C3x6C2)?
Thanks in advance
2 answers
e)5C3x6C2+5C4x6C1+5C5 is this correct
Thank you very much
Thank you very much