What is the probability of getting alternating heads and tai

What is the probability of getting alternating heads and tails on six tosses of a fair coin?

Solution

In 6 tosses, there are total 2*2*2*2*2*2 = 2^6 = 64 number of outcomes

The desired outcomes are either HTHTHT or THTHTH i.e, only 2, the probability is therefore 2/64 = 0.03125