Question

Probability of a coin being flipped 3 times and each time landing on heads

Answer 1

We have no way to calculate the probability of the coin being flipped three times.  It really depends on who, where, when, and why.

But if it IS flipped 3 times, and it's an honest coin, then . . .

-- the probability of heads on the first flip is 0.5

-- the probability of heads on the second flip is 0.5

-- the probabilty of heads on the third flip is 0.5

-- the probability of all three results is

(0.5) x (0.5) x (0.5) = 0.125

That's 12.5% .

(or one eighth)