How many different algebraic quantities can be formed by combining a, b, c, d, e with the + and -signs, all the letters taken together?

How many different four letter words can be formed by using the four letters a,b, c, d, while the letter can be repeated ?

In how many different words can be formed by using all the letters of the word ARROW if the two R's are not together ?

How many different words can be formed by jumbling the letters of the word ‘MISSISSIPPI in which no two S are together ?

How many three letter words can be formed using a,b,c,d,e if Repetition is not allowed il. repetition is allowed?

How many three letter words can be formed using a , b , c , d , e if Repetition is not allowed ii. repetition is allowed?

How many different words can be formed by using all the letters of the word MATHEMATICS ? In how many of them, vowels are always together ?

How many different words can be formed by jumbling the letters of the word 'MISSISSIPPI' in which no two S are together ?

How many different four letter words can be formed (with or without meaning) using the letters of the word MEDITERRANEAN such that the first letter is E and the last letter is R.

How many different words can be formed using all the letters of the word HONOLULU is no 2alike letters are together