Prove that from the letters of the sentence, Daddy did a deadly deed' , one or more letters can be selected in 1919 ways.

Three letters can be posted in five letter boxes in 3^(8) ways.

Three letters can be posted in five letter boxes in 3^(5) ways.

Find the number of ways in which onee or more letters can be selected from the letter. AAAAA BBBB CCC DD EFG.

The number of ways in which four letters can be selected from the word degree, is

The number of ways in which any four letters cab be selected from the word 'CORGOO' is

In how many ways can the letters of the word ' INDIA' be arranged ?

How many words, with or without meaning can be made from the letters of the word MONDAY, assuming that no letter is repeated, if. (i) 4 letters are used at a time, (ii) all letters are used at a time, (iii) all letters are used but first letter is a vowel?

How many words, with or without meaning can be made from the letters of the word MONDAY, assuming that no letter is repeated, if. (i) 4 letters are used at a time, (ii) all letters are used at a time, (iii) all letters are used but first letter is a vowel?

There sre three letters asnd three envelopes. Find the total number of wys in which letters can be put into the envelopes so that each envelope has only one letter.

Seven different letters are given. Then the number of ways in which , words of 5 letters can be formed such that atleast one of the letters is repeated is