Question

you toss a coin four times. what's the probability of tossing tails exactly once? is this an unusual event?

Answer 1

Explanation:

Four tosses of the coin result in 2^4 = 16 possible outcomes of which FOUR

will have ONE tails :

HHHT

HHTH
HTHH
THHH so 4 out of 16 = 4/16 = 1/4 Not very unusual