A bag contains nine yellow balls, three white balls and four red balls. In how many ways can two balls be drawn from the bag?  Choose the correct choice from the following choices:
A) 250  B) 800  C) 740  D) 120  E) 200
Explanation:   Total number of balls = 9 + 3 + 4   Two balls can be drawn from 16 balls in 16C2 ways=(16*15/1*2)=120 ways   Answer: 120
<result>D</result>
A bag contains nine yellow balls, three white balls and four red balls. In how many ways can two balls be drawn from the bag?