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Subject: Maths, asked on 27/2/18

Three dice are?thrown simultaneously for 10 times. If getting a triplet is considered a success, then find the probability of trials that have less than 3 failures.

Subject: Maths, asked on 23/2/18

Solve 10th

​Q10. Prove that if E and F are independent events, then the events E and F' are also independent.

Subject: Maths, asked on 23/2/18

A card from a pack of 52 cards is lost. From the remaining cards of the pack , two cards are drawn at random and are found to both clubs .Find the probability of the lost card being of hearts.

Subject: Maths, asked on 23/2/18

Q). Bag I contains 3 black and 2 white balls, Bag II contains 2 black and 4 white balls. A bag and a ball is selected at random. Determine the probability of selecting a black ball.

Subject: Maths, asked on 22/2/18

I am not able to solve probability questions..What are the things that i should practice ? and where should i use combination formula? 

 

 

Subject: Maths, asked on 22/2/18

2 cards are drawn from.a well shuffled pack of 52 cards without replacement. What is the probability the one is red queen and the other a king of black

Subject: Maths, asked on 22/2/18

Two cards are drawn successively without replacement from a well shuffled pack of 52 cards .find the mean of the number of kings

Subject: Maths, asked on 21/2/18

Solve this:

13.  A box contains 13 bulbs, out of which 5 are defective. 3 bulbs are randomly drawn, one by one without replacement, from the box. Find the probability distribution of  the number of defective bulbs.  [CBSE 2005]

Subject: Maths, asked on 21/2/18

Experts could u please answer the 27 th qtn...

Subject: Maths, asked on 14/2/18

Q.23

Subject: Maths, asked on 11/2/18

Q.23. Four bad oranges are accidentally mixed with 16 good ones. Find the probability distribution of the number of bad oranges when two oranges are drawn at random from this lot. Find the mean and variance of the distribution.

Subject: Maths, asked on 10/2/18

Q.28 second part

Subject: Maths, asked on 10/2/18

Two cards are drawn at random from a well shuffled deck of 52 cards , successively without replacement . Second card is found to be a spade , what is the probability that first card was also a spade ?

Subject: Maths, asked on 10/2/18

A box has 5 balls . Two balls are drawn at random and are found to be white . What is the probability that the box has 4 white balls ?

Subject: Maths, asked on 8/2/18

How many different words can be formed of the letters 'MALENKOV' so that:
1. No two vowels are together
2. The vowels may occupy odd places

Please give no links I'll need the answer with full method

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