Question

A coin is tossed on two successive times. I) Write the sample space ii) P( getting exactly one head) iii) P( getting no heads) iv) P( getting at least one tail) SECTION C : Question 21 – 30 carry 3 marks

Answer 1

Given : A coin is tossed two times successively.

Solution:

Formula used: Probability =
`\frac{\text{number of outcome}}{\text{total number of outcome}}`

(i) Sample space

`HH\\HT\\TH\\TT\\`

(ii) P( getting exactly one head) =
`(2)/(4)= (1)/(2)`

(iii) P( getting no heads)=
`(1)/(4)`

(iv)P( getting at least one tail)=
`(3)/(4)`