CLASS: ΙX
TOPIC: Probability SUB: Mathematics
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1) Three coins are tossed once, find the probability of getting at least one head.
(7/8)
2) A letter of English alphabet is chosen at random. Calculate the probability that the
letter chosen is a
Vowel.
(5/26)
3) A Dice is thrown once, find the probability of getting a prime number
(1/2)
4) A pair of dice is thrown once; find the probability of getting a doublet.
(1/6)
5) A bag contains fifteen balls numbered 1 to 15. Find the probability of drawing a prime
numbered Ball, when one ball is drawn from the bag at random.
(2/5)
6) A dice is thrown once.Find the probability of getting
і) an even number,
іі) A prime number
(½, ½, ⅓)
ііі) a number greater than 4?
7) From a group of 3 boys and 2 girls, we select two children. What are the
favourable out comes
