When 3 coins are tossed simultaneously, the probability of having 3 heads is:
Answer & explanation
Correct answer: option 4
$\text{Number of coins}=3.$
$\text{Total outcomes}=2^3=8.$
$\text{Sample space}=\{HHH,HHT,HTH,HTT,THH,THT,TTH,TTT\}.$
$\text{Favourable outcome for 3 heads}=1\;(HHH).$
$P(\text{3 heads})=\frac{1}{8}.$
$P(\text{3 heads})=\frac{1}{8}.$