Number of green tickets = 3
Number of yellow tickets = 4
Number of blue tickets = 5
Total number of tickets = 3 + 4 + 5 = 12
(i) P (getting a green ticket) = 3/12 = 1/4
(ii) Total Number of green and yellow tickets
= 3 + 4 = 7 tickets
P (getting a green or yellow ticket) = 7/12
(iii) Since, Basket contains green, yellow and blue tickets only.
∴ Number of orange tickets = 0
∴ P (getting an orange ticket) = 0/12 = 0