14C7=14!/(7!7!)
! means factorial
7!=7×6×5×4×3×2×1
Please help. I didn't get the right answer with this before.
A mathematics journal has accepted 14 articles for publication. However, due to budget restraints, only 7 articles can be published this month. How many specific ways can the journal editor assemble 7 of the 14 articles for publication?
Possible answers:
14
3,432
98
17,297,280
2 answers
If order is not important
14C7=14!/(7!7!)
! means factorial
7!=7×6×5×4×3×2×1
If order is important, which is not explicit in the question, then the answer is
14P7=14!/7!
14C7=14!/(7!7!)
! means factorial
7!=7×6×5×4×3×2×1
If order is important, which is not explicit in the question, then the answer is
14P7=14!/7!