How many words, with or without meaning, can be formed using all the letters of the word EQUATION, using each letter exactly once?

  There are 6 items in column A and 6 items in column B. A student is asked to match each item in column A with an item in column B. How many possible answers (correct or incorrect) are there to the question?

  From a committee of 8 persons, in how many ways can we choose a chairman and vice chairman assuming one person cannot hold more than one position?

  How many different 5-letters words can be formed out of the letters of the word ‘DELHI’? How many of these will begin with D and end with E?

  The letter of the Word TUESDAY are arranged in a line, each arrangement ending with letter S. How many different arrangements are possible? How many of them start with letter D?

  Find the number of different 8-letters words formed from the letters of the word TRIANGLE if each word to have T and E at the end places.

  Find the number of different 8-letters words formed from the letters of the word EQUATION, if each word is to start with a vowel.

  In how many ways can 6 boys and 5 girls be arranged for a group photograph if the girls are to sit on chairs in a row and the boys are to stand, in row, behind them?

  Find the number of different 8 letter words formed form the letters of the word TRIANGLE if each word is to have vowels occupying the second, third and fourth places.

  In how many ways can 4 boys and 3 girls be seated in a row of 7 chairs if boys and girls alternate?