Question

A coin is tossed 3 times what is the probability of getting at least one head

Answer 1

total outcomes : 8 : HHH ,TTT ,HTH ,THT ,HTT, THH, HHT, TTH
favourable outcomes : 7 : HHH, HTH, THT , HTT , THH , TTH , HHT .
probability of at least one head : 7/8

Answer 2

8 of TTT, TTT,TTT,TTT .TTT is a probability getting at least one head