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12th ICSE
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What is the probability that a couple's second child will be a boy, given that the first child is a girl?

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Important Questions on Probability

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12th ICSE
IMPORTANT
Understanding ISC Mathematics Class 12 Volume 2>Chapter 10 - Probability>CHAPTER TEST>Q 12

Find the probability that when a hand of 7 cards is drawn from a well-shuffled pack of 52 cards. It contains all kings.

EASY
12th ICSE
IMPORTANT
Understanding ISC Mathematics Class 12 Volume 2>Chapter 10 - Probability>CHAPTER TEST>Q 12
Find the probability that when a hand of 7 cards is drawn from a well-shuffled pack of 52 Cards. It contains exactly 3 kings.
EASY
12th ICSE
IMPORTANT
Understanding ISC Mathematics Class 12 Volume 2>Chapter 10 - Probability>CHAPTER TEST>Q 12
 Find the probability that when a hand of 7 cards is drawn from a well-shuffled pack of 52 cards. It contains  at least 3 kings.
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12th ICSE
IMPORTANT
Understanding ISC Mathematics Class 12 Volume 2>Chapter 10 - Probability>CHAPTER TEST>Q 13
Four married couples have gathered in a room. Two persons are selected at random from amongst them. Probability that the selected persons are a husband and his wife is ab, where a & b are smallest positive integers. Find b-a.
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12th ICSE
IMPORTANT
Understanding ISC Mathematics Class 12 Volume 2>Chapter 10 - Probability>CHAPTER TEST>Q 13
Four married couples have gathered in a room. Two persons are selected at random from amongst them. Find the probability that the selected persons are a gentleman and a lady but not a couple. 
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12th ICSE
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Understanding ISC Mathematics Class 12 Volume 2>Chapter 10 - Probability>CHAPTER TEST>Q 14
A bag contains 5 red, 4 blue and m green balls. Two balls are drawn at random from the bag. If the probability of both being green is 17, then find m. 
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12th ICSE
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Understanding ISC Mathematics Class 12 Volume 2>Chapter 10 - Probability>CHAPTER TEST>Q 15
 The odds that a book will be reviewed favourably by three independent critics are 5:2, 4: 3 and 3:4 respectively. What is the probability that of the three reviews, a majority will be favourable? 
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12th ICSE
IMPORTANT
Understanding ISC Mathematics Class 12 Volume 2>Chapter 10 - Probability>CHAPTER TEST>Q 16
Four dice are thrown. What is the probability that the sum of the numbers appearing on the dice is 23?