Question

two coins are tossed simultaneously. find the probability of getting the following outcome. i. two tails . ii. no tail. iii. At least one tail.​

Answer 1

Answer:

Three coins are tossed.

We will denote H- Head; T- Tail

The possible outcomes (Exhaustive cases)are 8 as follows:

HHT, HTH, HHH, HTT

THT, TTH, THH, TTT

Atleast two tails amount to saying 2 or 3 tails.

The corresponding favourable cases are four as follows:

HTT, THT, TTH, TTT

We know that Probability

= favourable cases/ Exhaustive cases

= 4/8 = 1/2 = 0.5