If a 3-member subcommittee is to be formed from a certain 9-member committee, how many different such subcommittee are possible? Choices:
A) 6	B) 18	C) 20	D) 84	E) 216
Another way:   1st member can be selected in 9 ways   2nd can be selected in 8 ways   3rd can be selected in 7 ways   So total ways : 504   But to avoid the similar scenarios 504/3!=84   84
<result>D</result>
If a 3-member subcommittee is to be formed from a certain 9-member committee, how many different such subcommittee are possible?