Mathematics
A bag contains 25 cards, numbered through 1 to 25. A card is drawn at random. What is the probability that the number on the card drawn is:
(i) a multiple of 5
(ii) a perfect square
(iii) a prime number
Related Questions
Fill in the blanks:
(i) The probability of a sure event is __.
(ii) The probability of an impossible event is __.
(iii) For an event E, we have P(E) + P(not E) = __.
(iv) For an event E, we have () ≤ P(E) ≤ ().
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”
A bag contains 5 white, 2 red and 3 black balls. A ball is drawn at random. What is the probability that the ball drawn is a red ball?
A letter of the word SECONDARY is selected at random. What is the probability that the letter selected is not a vowel?