the odds that it will occurmare 5 to 11

Question

probability of the event can u help me sir in how to guess the question answer is 5/13

Answer 1

Habeeba,

 

If I understand your slightly garbled question, there can be many different probability scenarios that will map to your probability answer of 5/13.  Hence, there is no one unique answer.  For example:

 

Consider a standard deck of 52 playing cards.  Probability 5/13 is same as 20/52 since I just multiplied top and bottom by 4.  Shuffle the deck, pick one card and note its value, replace it in the deck and reshuffle.  Do this 4 times.  What then is the probability that all four cards you picked is in the range [2, 3, ...6]?

 

Since each time you picked a card the conditions were the same (full 52 card deck reshuffled), the probabilities are identical.  Thus

 

Answer = (4 suits ) (5 cards in the range)/52 = 20/52 = 5/13.

 

You can come up with variations on this example to see that many scenarios can produce the same answer.