Let X be a random variable which assumes values x1,x2,x3,x4 such that
2P(X=x1)=3P(X=x2)=P(X=x3)=5P(X=x4)‌. ‌
Find the probability distribution of X.
OR
A coin is tossed 5 times. Find the probability of getting (i) at least 4 heads, and (ii) at most 4 heads.