Question Number 11425 by tawa last updated on 25/Mar/17

Answered by mrW1 last updated on 25/Mar/17

(1) 12C5=792  (2) 9C5+3×(9C4)+3×(9C3)=126+3×126+3×84=756  (3) 10C5+10C3=252+120=372

Commented bytawa last updated on 25/Mar/17

God bless you sir