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RD Chapter 13- Probability Ex-13.1 Interview Questions Answers

Question 1 : The probability that it will rain tomorrow is 0.85. What is the probability that it will not rain tomorrow ?

Answer 1 :


Question 2 :
A die is thrown. Find the probability of getting :
(i) a prime number
(ii) 2 or 4
(iii) a multiple of 2 or 3
(iv) an even prime number
(v) a number greater than 5 (CBSE 2008)
(vi) a number lying between 2 and 6 [NCERT]

Answer 2 :


Question 3 :
Three coins are tossed together. Find the probability of getting:
(i) exactly two heads
(ii) at most two heads
(iii) at least one head and one tail
(iv) no tails

Answer 3 :


Question 4 : A and B throw a pair of dice. If A throws 9, find B’s chance of throwing a higher number.

Answer 4 :


Question 5 : Two unbiased dice are thrown. Find the probability that the total of the numbers on the dice is greater than 10.

Answer 5 :


Question 6 :
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is
(i) a black king
(ii) either a black card or a king
(iii) black and a king
(iv) a jack, queen or a king
(v) neither a heart nor a king
(vi) spade or an ace
(vii) neither an ace nor a king
(viii) neither a red card nor a queen [CBSE 2005]
(ix) other than an ace
(x) a ten
(xi) a spade
(xii) a black card
(xiii)the seven of clubs
(xiv) jack
(xv) the ace of spades
(xvi) a queen
(xvii) a heart
(xviii) a red card
(xix) neither a king nor a queen [CBSE 2013]

Answer 6 :