Question

A coin is tossed four times. What is the probability of getting tails four times in a row?

Answer 1

11/16

Explanation:

P(TTHH) = 4C2*(1/2)^4 = 4!/2!*2!*(1/2)^4=6/16

Total Probablity = 1/16 + 4/16 + 6/16

=11/16