If two fair coins are tossed, what is the probability of getting at least one head?

A.
(frac{1}{4}) 
B.
(frac{1}{2}) 
C.
1 
D.
(frac{43}{78}) 
E.
(frac{3}{4})
Correct Answer: Option E
Explanation
Prob. of getting at least one head
Prob. of getting one head + prob. of getting 2 heads
= (frac{1}{4}) + (frac{2}{4})
= (frac{3}{4})