Question

rahim tosses two different coins simultaneously. Find the probability of getting atleast one tail.

Answer 1

Let S be the sample space.
S = {HH, TT, TH, HT}
n(S) = 4
Let E be the event of getting at least one tail
E = {TH, HT, TT}
n(E) = 3
$requiredprobability,p\left(E\right)=\frac{n\left(E\right)}{n\left(S\right)}=\frac{3}{4}$