Bert and Ernie are among 12 tenants on Sesame Street, from which 9 tenants are to be selected for the neighborhood watch. Of the different possible selections, how many contain neither Bert nor Ernie?  Choose the correct choice
A) 1
B) 3
C) 9
D) 10
E) 12
Removing Bert and Ernie the list will have 10 people   Question now becomes choose 9 out of 10   10! / 1!*9!   = 10   there are 10 ways to do so.   ANS: 10
<result>D</result>
Bert and Ernie are among 12 tenants on Sesame Street, from which 9 tenants are to be selected for the neighborhood watch. Of the different possible selections, how many contain neither Bert nor Ernie?