Tough and Tricky questions: Combinations.
For an upcoming charity event, a male vocalist has agreed to sing 4 out of 6 old songs and 2 out of 5 new songs. How many ways can the singer make his selection?
A) 25
B) 50
C) 150
D) 480
E) 600
Kudos for a correct solution.
Source: Chili Hot GMAT