Question

a coin us tossed three times successively.what is the probability og getting
i) exactly 2 heads
ii)at least one head
iii)at most 2 tails​

Answer 1

Answer:

i) 3/8

ii)7/8

iii)7/8

Step-by-step explanation:

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

total outcomes is 8

i) exactly two heads={HHT,THT,THH}= 3

i.e., 3/8

ii)atleast one head={HHH,HHT,HTH,THH,HTT,THT,TTH}=7

i.e., 7/8

iii)atmost two tails={HHH,HHT,THH,HTH,HTT,THT,TTH} =7

i.e.,7/8

Answer 2

Answer:

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