Give a quick stream of consciousness before answering the following question. Twenty coins are tossed simultaneously. In how many of the outcomes will the third coin turn up a head?
Options:
(A) 2^19
(B) 2^10
(C) 3 * 2^8
(D) 3 * 2^9
(E) 3 * 2^10
Fix the third coin as H. The remaining 19 coins have 2^19 outcomes.
The answer: (A).
Give a quick stream of consciousness before answering the following question. Twenty coins are tossed simultaneously. In how many of the outcomes will the third coin turn up a head?
Options:
(A) 2^19
(B) 2^10
(C) 3 * 2^8
(D) 3 * 2^9
(E) 3 * 2^10
user
Fix the third coin as H. The remaining 19 coins have 2^19 outcomes.
The answer: (A).
assistant
Give a quick stream of consciousness before answering the following question. Twenty coins are tossed simultaneously. In how many of the outcomes will the third coin turn up a head?
Options:
(A) 2^19
(B) 2^10
(C) 3 * 2^8
(D) 3 * 2^9
(E) 3 * 2^10
Fix the third coin as H. The remaining 19 coins have 2^19 outcomes.
The answer: (A).