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CBSE XII
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Model Papers
Find the probability of number of doublets in three throws of a pair of dice.
cbse
class12
modelpaper
2012
sec-b
q15
math
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asked
Jan 24, 2013
by
thanvigandhi_1
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A man is known to speak the truth 3 out of 5 times. He throws a dice and reports that it is 1. Find the probability that it is actually 1.
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A and B throws a pair of die turn by turn. The first to throw 9 is awarded by a prize. If A starts the game, show that the probability of A getting the prize is \(\large \frac{9}{17} \).
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Two cards are drawn one by one without replacement from well shuffled pack of 52 cards. Find the probability distribution of the number of aces.
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Suppose a girl throws a die. If she gets a 5 or 6, she tosses a coin three times and notes the number of heads. If she gets 1, 2, 3 or 4 she tosses a coin once and notes whether a head or tail is obtained. If she obtained exactly one head, what is the probability that she threw 1, 2, 3 or 4 with the die?
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Differentiate \( (x^2-5x+8)(x^2+7x+9)\) in three ways mentioned : (i) by using product rule (ii) by expanding the product to obtain a single polynomial (iii) by logarithmic differentiation. Do they all give the same answer?
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Jan 10, 2013
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