Sixteen cards are labelled as a, b, c, ….., m, n, o, p. They are put in a box and shuffled. A boy is asked to draw a card from the box. What is the probability that the card drawn is :

(i) a vowel

(ii) a consonant

(iii) none of the letters of the word median.

Each of the letter of the word 'BOUNDARIES' is written on identical cards and put in the bag. they are shuffled if a card is drawn at random, What is the probability that the letter is

(i) a consonant

(ii) one of the letter of the word 'LUCKNOW' ?

(iii) one of the letter of the word 'INDIA' ?

Cards marked with numbers 1, 2, 3, 4, ……, 20 are well-shuffled and a card is drawn at random. What is the probability that the number on the card is :

(i) a prime number

(ii) divisible by 3

(iii) a perfect square?

There are 25 discs numbered 1 to 25. They are put in a closed box and shaken throughly. A disc is drawn at random from the box. Find the probability that the number on the disc is:

(i) an odd number

(ii) divisible by 2 and 3 both

(iii) a number less than 16.