CBSE Class 10 Mathematics Probability Assignment Set 10

Question. From a bag containing chits numbered \( 1, 2, 3, \ldots, 50 \). Two chits are drawn. Find the probability that both the chits have prime numbers.
Answer: \( \frac{3}{35} \)

Question. A bag contains 5 white and 4 blue balls. 2 balls are drawn from the bag. Find the probability that both are white balls.
Answer: \( \frac{5}{18} \)

Question. A Box contains 5 red 7 green and 3 blue balls. A ball is drawn at random. Find the probability that ball drawn is non-red.
Answer: \( \frac{2}{3} \)

Question. A Card is drawn from a well-shuffled pack of cards. Find the probability of getting black ace.
Answer: \( \frac{1}{26} \)

Question. A pair of dice is thrown once. Find the probability that the sum is neither 7 nor 11.
Answer: \( \frac{7}{9} \)

Question. The Probability of an event A is \( \frac{7}{9} \). Find the probability of not A.
Answer: \( \frac{2}{9} \)

Question. A die is thrown, find the probability of having a number greater than or equal to 5.
Answer: \( \frac{1}{3} \)

Question. A Coin is thrown three times. Find the probability of getting 3 heads.
Answer: \( \frac{1}{8} \)

Question. One card is drawn from a pack of cards. Find the probability that it is a spade.
Answer: \( \frac{1}{4} \)

Question. A bag contains 17 cards numbered \( 1, 2, 3, \ldots, 17 \). One card is drawn from the bag. Find the probability that it has
(i) Prime no.
(ii) odd no.
Answer:
(i) \( \frac{7}{17} \)
(ii) \( \frac{9}{17} \)