Question

Two unbiased coins are tossed simultaneously. Find the probability of getting two heads.

• A. $\frac{1}{4}$
• B. $\frac{1}{3}$
• C. $\frac{5}{6}$
• D. None of these

Answer 1

Answer: (A)

$\frac{1}{4}$

If two unbiased coins are tossed simultaneously, we obtain any one of the following as an out come: {HH, HT, TH, TT}
$\therefore$ Total number of elementary events = 4
Two heads are, obtained if elementary event HH occurs
$\therefore$ Favourable number of events = 1
Hence, P (Two heads) = $\frac{1}{4}$