Q) While shuffling a pack of 52 cards, one card was accidently dropped. Find the probability that the dropped card(i) is not a face card.(ii) is a black king. PYQ: Q 25 – CBSE 2025 – Code 30 – Series 5 – Set 1 Ans: (ii) Probability to get a non – face card: [Note: […]
probability
Q) An unbiased coin is tossed. If the outcome is a head, then a pair of unbiased dice is rolled and the sum of the numbers obtained on them is noted. If the toss of the coin results in a tail, then a card from a well-shuffled pack of nine cards numbered 1,2,3,…. 9 is randomly
Q) In a TV show, a contestant opts for video call a friend life line to get an answer from three of his friends, named Amar, Akbar & Anthony. The question which he asks from one of his friends has four options. Find the probability that: (a) Akbar is chosen for the call. (b) Akbar
Q) Rahul and Ravi planned to play Business ( board game) in which they were supposed to use two dice. 1. Ravi got first chance to roll the dice. What is the probability that he got the sum of the two numbers appearing on the top face of the dice is 8? a)
Q) Three coins are tossed simultaneously. What is the probability of getting(i) at least one head?(ii) exactly two tails?(iii) at most one tail? Ans: Since a coin has two possible outcomes (H, T) ∴ Total outcomes of 3 coins = 23 = 8 [i.e. (H, H, T), (H, H, H), (H, T, T), (H, T,
Three coins are tossed simultaneously. What is the probability of getting Read More »
Q) A box contains 90 discs which are numbered 1 to 90. If one disc is drawn at random from the box, find the probability that it bears a :(i) 2-digit number less than 40(ii) number divisible by 5 and greater than 50(iii) a perfect square number Ans: Total Number of discs = 90 ∴
A box contains 90 discs which are numbered 1 to 90. If one disc is drawn at random Read More »
Q) In a two-dice game, a player throws two dice simultaneously. A player scores the sum of the two dice thrown and gradually reaches a higher score as they continue to roll. Answer the following questions:i. Find the probability that the difference between the numbers on the two dice is 3.ii. Find the probability that the
In a two-dice game, a player throws two dice simultaneously. A player scores the sum Read More »
Q) How many positive three digit integers have the hundredths digit 8 and unit’s digit 5? Find the probability of selecting one such number out of all three digit numbers. Ans: 3 digit integers with hundredths digit as 8 will lie between 800 and 999 Now, numbers with unit’s digit as 5 will be 805,
How many positive three digit integers have the hundredths digit 8 and unit’s digit 5? Read More »
Q) Two dice are rolled together bearing numbers 4, 6, 7, 9, 11, 12. Find the probability that the product of numbers obtained is an odd number Ans: The numbers on each dice are 4, 6, 7, 9, 11, 12. ∴ Total possible outcomes = 6 x 6 = 36 To get product of 2
Two dice are rolled together bearing numbers 4, 6, 7, 9, 11, 12. Find the Read More »
Q) One card is drawn at random from a well shuffled deck of 52 cards. Find the probability that the card drawn (i) is queen of hearts (ii) is not a jack. Ans: (i) probability to get queen of hearts Since there is only one Queen of hearts in a deck of 52 cards ∴