Two coins are tossed once. Find the probability of getting:
(i)    Exactly one head.
(ii)   At most one head.

“Three unbiased” coins are tossed together. Find the probability of getting :

(i)    One head.
(ii)    All heads.

Three unbiased coins are tossed together. Find the probability of getting :
(i) Two heads.
(ii) At least two heads.

An unbiased die is thrown once. Find the probability of getting
(i) an even number and a multiple of 3. (ii) an even number or a multiple of 3.

An unbiased die is thrown once. Find the probability of getting:
(i)    a multiple of 2 or 3.
(ii)    2 or 4.

229. A die is thrown once. What is the probabilty of getting a number 5 or 6.