Help... A coin is tossed thrice find the probability of obtaining :
a) one head or one tale
b) exactly two heads
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Total outcomes
= 8
[ HHH , TTT , HTT , HTH , TTH , THT , HHT , THH ]
Favourable outcomes = 6
Probablity = 6/8 = 3/4
Total outcomes = 8
Favourable outcomes = 3/8
= 8
[ HHH , TTT , HTT , HTH , TTH , THT , HHT , THH ]
Favourable outcomes = 6
Probablity = 6/8 = 3/4
Total outcomes = 8
Favourable outcomes = 3/8
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