Subject: Maths, asked on 18/3/18

## Q. There is a group of 100 people who are patriotic out of which 20 believe in non-violence. Two persons are selected at random out of them. find the probability distribution for selected persons who are non-violence. Also find the  mean.

Subject: Maths, asked on 18/3/18

## Solve this: 6. A bag contains 4 balls. Two balls are drawn at random (without replacement) and are found to be white. What is the probability that all the balls in the bag are white? All India 2016, 2014C

Subject: Maths, asked on 18/3/18

## No links please: (ii) For two events A and B

Subject: Maths, asked on 18/3/18

## No links please: Q. Eight dice are thrown 6561 times. How many times can one expect at least tow dice to show a 2 or 3 or 4 or 5 ?

Subject: Maths, asked on 16/3/18

## 27 fast Q.27. In a hurdle race, a player has to cross 8 hurdles. The probability that he will clear a hurdle is $\frac{4}{5}$, what is the probability that he will knock down in fewer than 2 hurdles?

Subject: Maths, asked on 15/3/18

## Q. Consider the experiment of tossing a coin. If the coin shows head, toss it again, but if it shows tail, then throw a die. Find the conditional probability of the event that " the die shows a number greater than 4 " given that "there is at least one tail".

Subject: Maths, asked on 15/3/18

## No links please: (i) Let x be a random variable which takes the value  are A.P. Find the probability distribution.

Subject: Maths, asked on 15/3/18

## Q  One bag A contains 5 white and 3 black ball another bag B contains 6 white and 2 black balls. A card drawn from the pack of cards. If It is club card a ball is drawn from bag A. If It is red card ball is drawn from bag B otherwise he kept quiet. The probability of getting white ball is?

Subject: Maths, asked on 14/3/18

## An urn contains 4 white and 3 red balls. Let X be the number of red balls in a random draw of three balls. Find the mean and variance of X.

Subject: Maths, asked on 14/3/18

## If.we.subtract Eb.from.Ea.intersection Eb we get Ea how they have.taken Eb

Subject: Maths, asked on 14/3/18

## Find the probability that a given three letter word (in English) has all letters repeated

Subject: Maths, asked on 14/3/18

## Please answer the following: 1. A boy throws a coin. He is to received two rupees for getting a tail and ten rupees for getting a head . find the expectation ( Mean receipt). 2.  A game at a school fair cost Rs. 10, With a prize of Rs. 50. Of the probability of winning is $\frac{1}{10}$, is it a fair game?

Subject: Maths, asked on 13/3/18