If a coin is tossed twice what is the probability that it will land either heads both times or tails both times? Select the correct option:
A) A)1/8
B) B)1/6
C) C)1/4
D) D)1/2
E) E)1
Prob to get 2 heads = 1/2*1/2 = 1/4   Prob to get 2 tails = 1/2*1/2 = 1/4   So, Prob to get either 2 heads or 2 tails = 1/4+1/4 = 1/2   Answer will be 1/2.
<result>D</result>
If a coin is tossed twice what is the probability that it will land either heads both times or tails both times?