Question

three balanced coin are tossed together. then.......... is the probability that at most two heads come up
a) 1/2 b) 3/8 c) 5/8 d) 7/8
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Answer 1

Answer:

a)1/2

Step-by-step explanation:

If three coins are tossed, what is the probability of at least two heads? Assuming fair coins and independent tosses, there are 8 equally likely outcomes:

HHH, HHT, HTH, HTT, THH, THT, TTH, TTT. Of these, four have at least two heads. So the probability is 4/8 = 1/2 = 50%.

Answer 2

Answer:

1/2

Step-by-step explanation:

because

coin 1 coin 2

t h

h t

h h

t t

so there is only 1 condition

therefore 1 / 2 is the answer .