If n is even and n pennies are tossed high into the air, what is the probability that exactly half of them will land with the Heads side facing up? 2/2 2n OP(n, n/2) 2" C(n, n/2) n! OP(n, n/2) n! C(n, n/2) 2"

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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If n is even and n pennies are tossed high into the air, what is the probability that
exactly half of them will land with the Heads side facing up?
2²/2
2n
OP(n, n/2)
2n
C(n, n/2)
n!
OP(n, n/2)
n!
C(n, n/2)
2"
Transcribed Image Text:If n is even and n pennies are tossed high into the air, what is the probability that exactly half of them will land with the Heads side facing up? 2²/2 2n OP(n, n/2) 2n C(n, n/2) n! OP(n, n/2) n! C(n, n/2) 2"
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