#### A coin is tossed two times. Find the probability of getting at most one head.

Solution.     Probability; Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one
Total cases  = 4 (HH, TT, HT, TH)
Cases of at most 1 head = HT, TH, TT
Probability = $\frac{Number\, of\, favourable\ cases }{Total\, number\, of\, cases}$

Probability of getting at most 1 head = $\frac{3}{4}$