Ten different letters of alphabet are given, words with 5 letters are formed from these given letters. Then, the number …

How many different five-letter words can be formed using the letter from the world APPLE?

How many Permutations of the letters of the word APPLE are there?

There are eight boxes of chocolates, each box containing distinct number of chocolates from 1 to 8. In how many ways fou…

In an examination paper, there are two groups each containing 4 questions. A candidate is required to attempt 5 question…

After every get-together every person present shakes the hand of every other person. If there were 105 handshakes in all…

How many arrangements of four 0's (zeroes), two 1's and two 2's are there in which the first 1 occur before the first 2?

In how many different ways can the letters of the word ALLAHABAD be arranged?