Question

Three coins are tossed simultaneously. What is the probability of getting:
exactly 2 heads
at least one tail​

Answer 1

Step-by-step explanation:

Sample Space (S) ={HHH,HHT,HTT,HTH,THT,TTH,THH,TTT}

∴n(S)=8

A={HHH,HHT,HTH,THH}

∴n(A)=4

B={TTT}

∴n(B)=1

C={HHH,HHT,THT,THH}

∴n(C)=4

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