It is (1/2)3 = 1/8
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Zero. Since coins land on Heads or Tails and not numbers.
Assuming it is a fair coin, the probability is 1/24 = 1/16.
Since each event is independent, the probability remains at 0.5.
The probability of getting only one tails is (1/2)7. With seven permutations of which flip is the tails, this gives a probability of: P(six heads in seven flips) = 7*(1/2)7 = 7/128
The probability of tossing a coin 5 times and getting all tails is:P(TTTTT) = (1/2)5 = 0.03125 ≈ 3.13%