A contractor needs four carpenters; ten are sent from the union hall.
a. In how many ways can he pick his work crew?
ab, ac, ad, ba, bc, bd, ca, cb, cd, da, db ,dc
b. In how many ways the crew can be selected if John and Anna should be
included?
Can anyone help me with b please
2 answers
oh never mind i have the answers
What did you get?
1 answer