Question

12!/3!13! What does this mean?

Answer 1

12! = 12x11x10x9x8x7x6x5x4x3x2x1 =479,001,600

3! = 3x2x1 =6
13! = 6,227,020,800

6,227,020,800 x 6 = 37,362,124,800

479,001,600/37,362,124,800=0.0128