When tossing two coins once, what is the probability of heads on both the coins?	Choose the most appropriate option
A) 1/3	B) 5/8	C) 1/9	D) 1/4	E) 2/5
Total number of outcomes possible when a coin is tossed = 2 (∵ Head or Tail)   Hence, total number of outcomes possible when two coins are tossed, n(S) = 2 × 2 = 4   (∵ Here, S = {HH, HT, TH, TT})   E = event of getting heads on both the coins = {HH}   Hence, n(E) = 1   P(E) = n(E)/n(S)=1/4   Answer is 1/4.
<result>D</result>
When tossing two coins once, what is the probability of heads on both the coins?