Question

If three coins are tossed simultaneously, find the probability of the following events.

Event A: To get no head.

Answer 1

Sample space,

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

∴ n(S) = 8

Let A be the event of getting no head.

∴ A = {TTT}

∴ n(A) = 1

∴ `P(A) = (n(A))/(n(S))`

∴ `P(A) = 1/8`