Naveen Kumar 3
There is an decidability with the probability $p$ for each day. It means that the answer should contain the formula having $p$.
@Naveen Kumar 3Why we taking here p/2
@Naveen Kumar 3 I also think so.
@ajaysoni1924 each day we are first flipping a coin with probability p, then getting a head with probability 1/2.
so, P(success)= p*(1/2) =p/2 {both are independent events}
&, P(not success)= (1-p/2)