Give stream of consciousness and then the final answer. Fifteen coins are tossed simultaneously. In how many of the outcomes will the third coin turn up a head?
Options:
(A) 2^9
(B) 2^14
(C) 3 * 2^8
(D) 3 * 2^9
(E) 3 * 2^10
Fix the third coin as H. The remaining 14 coins have 2^14 outcomes.
The final answer: (B).