A coin is tossed n times. If the probability of getting atleast on head is greater that of getting atleast two tails by 5/32, then n is equal to ​

Question

A coin is tossed n times. If the probability of getting atleast on head is greater that of getting atleast two tails by \(\frac 5{32}\), then n is equal to

a. 5

b. 10

c. 15

d. none of these

Answer 1

Correct option is a. 5

Let X be a random variable denoting number of heads and Y denote the number of tails.