#### Answer

15

#### Work Step by Step

The number of possible combinations if r items are taken from n items is
nCr =$\frac{n!}{r!(n-r)!}$
The number of ways that 2 jokes can be ranked is:
= 6C2 x 1!
=$\frac{6!}{(6-2)!2!}$
=$\frac{6*5*4!}{4!2!}$
=$\frac{6*5}{2*1}$
= 15 ways