Question

Out of 12 men, just two are named Smith. In how many ways, disregarding the order of selection, can seven of the men be chosen:
e) if at least 1 smith must be included? f) if no more than one Smith may be included?

Answer 1

http://www.thestudentroom.co.uk/showthread.php?t=1786399

Answer 2

i have seen that. It did not help.