Question

Rahim tosses two different coins simultaneously. Find the probability of getting at least one tail.

Answer 1

Rahim tosses two coins simultaneously. The sample space of the experiment is {HH,HT, TH and TT}.
Total number of outcomes = 4
Outcomes in favour of getting at least one tail on tossing the two coins = {HT, TH, TT}
Number of outcomes in favour of getting at least one tail = 3
$\therefore$ Probability of getting at least one tail on tossing the two coins
$=\frac{Numberoffavourableoutcomes}{Totalnumberofoutcomes}=\frac{3}{4}$