Question

Pretty please! can somebody please help me on this hw problem.

Of the first 10 questions on a test, a student must answer 7. Of the next 5 questions, 3 must be answered. In how many ways can this be done?

Answer 1

i think it is a combination
C(10,7)xC(5,3)

Answer 2

\[\binom{10}{7}\times \binom{5}{3}\]

Answer 3

hey tkans i apreciate it coming from u

Answer 4

yeah thats what i though but i guess i doubted myself. thank you soo much ^_^