Words from the letters of the word PROBABILITY are formed by taking all letters at a time. The probability that both B's are not together and both I's are not together is

If the letters of the word ASSASSIN are written down in a row, the probability that no two S's occur together, is

A letter is chosen at random from the letter of the word "PROBABILITY". Find the probability that it is not a vowel.

The number of ways in which the letters of the word PESSIMISTIC can be arranged so that no two S's are together, no of two I's are together and letters S and I are never together is

A letter is taken at random from the letters of the word GANGA" and another letter is taken at random from the letters of the word BANGA .The probability that the selected letters are the same is:

Consider the word POSSIBILITY. In the arrangement of the letters of the above word let A and B denote the event that the 2 S's are together and the 3I's are together respectively, then

If the letters of the word REGULATIONS be arranged at random, find the probability that there will be exactly four letters between the R and the Edot

A letter is taken at random from the letters of the word 'ASSISTANT' and another letter is taken at random from the letters of the word 'STATISTICS'. The probability that the selected letters are the same is

Find the number of seen letter words that can be formed by using the letters of the word SUCCESS so that the two C are together but no two S are together.