Question

Three coins are tossed simultaneously.
(i) S is the event of getting at least two heads.
(ii) A is the event if getting at least one tail.​

Answer 1

Answer: Total no. of outcomes-

n(T) = 8

1. S = at least 2 heads

n(S) = 4 outcomes i.e.{HHH, HTH, HHT, THH}

P(S) = 4/8 = 1/2

2. A = at least 1 tail

n(A) = 7 outcomes i.e. {HTH, HTT, HHT, TTT, THH, THT, TTH}

P(A) = 7/8