problem 2

A couple has two children, Find the probability that both children are males, if it is known that at least one of the children is male.Also find the probability that both children are females, if it is known that the elder child is a female.

solution to miscellaneous problem 2 on probability of cbse class 12 mathematics

problem 3

Suppose that 5% of men and 0.25% of women have grey hair. A grey haired person is selected at random. What is the probability of this person being male? Assume that there are equal number of males and females.

solution to miscellaneous problem 3 on probability of cbse class 12 mathematics

problem 4

Suppose that 90% of people are right handed. What is the probability that at most 6 of a random sample of 10 people are right handed?

solution to miscellaneous problem 4 on probability of cbse class 12 mathematics

problem

In
a hurdle race, a player has to cross 10 hurdles. The probability that
he will clear each hurdle is (5/6). What
is the probability that he will knock down fewer than 2 hurdles?

problem

If
each element of a second order determinant is either zero or one,
what is the probability
that the value of the determinant is positive?

problem

An
electronic assembly consists of two subsystems, say, A and B. From
previous testing procedures, the following probabilities are assumed
to be known

P(A
fails) = 0.2 P(B fails alone) = 0.15 P(A and B fail) = 0.15

Evaluate
the following probabilities P(A fails|B has failed) ; P(A fails
alone)

problem

How
many times must a man toss a fair coin so that the probability of
having at least one head is more than 90%?

finding the value of n in binomial distribution given the probability question for cbse ncert 12th mathematics

problem

Assume that the chances of a patient having a heart attack is 40%. It is also assumed that a meditation and yoga course reduce the risk of heart attack by 30% and prescription of a certain drug reduces its chances by 25%. At a time a patient can choose any one of the two options with equal probabilities. It is given that after going through one of the two options the patient selected at random suffers a heart attack. Find the probability that the patient followed a course of meditation and yoga?

solution to miscellaneous problem on probability of cbse class 12 mathematics

problem

Bag I contains 3 red and 4 black balls and Bag II contains 4 red and 5 black balls.One ball is transferred from Bag I to Bag II and then a ball is drawn from Bag II. The ball so drawn is found to be red in colour. Find the probability that the transferred ball is black

solution to miscellaneous problem on probability of cbse class 12 mathematics

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**index of more problems on baye's theorem for ncert cbse xii mathematics**

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