JEE MATHEMATICS MCQ: PROBABILITY

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Analyzing +4 | -1

In a bag there are 10 balls of either Black or White. Let

A_k

be the event which contains exactly

k

white balls and its probability is proportional to

k^2

Now an another ball is drawn randomly. If

P(E)

be the probability that the ball drawn is white and

P(E)=\frac{a}{b}

Where

\operatorname{HCF}(a, b)=1

then the value of

|\mathrm{a}-\mathrm{b}|

equals

View answer and explanation

Correct option: D

Option D (3) is correct because it calculates the probability of drawing a white ball and then finds the absolute difference between the numerator and denominator of the simplified probability.

More Questions from PROBABILITY

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Consider the probability distribution

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is A bag contains

\left( {2\;n + 1} \right)

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n

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A

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B

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P\left( {A \cap B'} \right) = \frac{3}{{25}}

and

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P\left( A \right)

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A

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