Simplify 15C3

Answer 1

15C3 can be simplified as:

15C3 = (15!)/((15-3)!3!)
= (15 x 14 x 13 x 12!)/(12! x 3 x 2 x 1)
= (15 x 14 x 13)/(3 x 2 x 1)
= 455

Therefore, 15C3 simplifies to 455.