Question

Three unbiased coins are tossed once find the probability of getting atmost 2 tails or atleast 2 heads

Answer 1

Answer:1/2

Step-by-step explanation:

Sample space={TTT,HTT,THH,HTH,THT,HHH,HHT,TTH}

Total number of outcomes=8

Favourable outcomes(for tails and heads)=4

P(2 tails or at least 2 heads)=4/8=1/2