Question

Three coins are tossed simultaneously
(i) what is the probability of getting two heads

Answer 1

Answer:

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Hence the probability of getting exactly two heads is 83.

Answer 2

Let H be a head.

Let T be a tail.

To get exactly 2 heads in 3 tosses, the possible combinations is:

=> HHT

=> HTH

=> THH

The possible tosses are

=> HHH

=> HHT

=> HTH

=> THH

=> TTH

=> THT

=> HTT

=> TTT

Therefore, there are 8 possible combinations.

P(Two heads in three throws) = 3/8

= 0.375

Therefore, the probability of getting 2 heads in 3 flips is 0.375 .