Question

The probability of getting exactly one head in tossing a pair of coins is
(a) 0
(b) 1
(c)$\bf{\frac{1}{3}}$
(d)$\bf{\frac{1}{2}}$

Answer 1

Number of possible outcomes when two coins are tossed is 4. {HT, TH, HH, TT}

Number of favourable outcome is 2.

Probability = Favourable Outcome / Total Outcomes

Hence, the probability of getting exactly one head is 1/2.