If the number of words of 4 letters formed with n different letters of an alphabet such that at least on letter is repeated in the word is 936, then n= (A) 4 (B) 5 (C) 6 (D) none of these

The number of 4 letter words that can be formed with the letters in the word EQUATION with at least one letter repeated is

Assertioin: Number of words of 5 letters that can be formed with 10 different letters so that at least one letter is repeated in the word is 10^5-^10P_5 Reason:Number of words of 5 letters which can be formed with 10 different letters when repetiton is allowed, does not include the number of words of 5 letters that are different. (A) Both A and R are true and R is the correct explanation of A (B) Both A and R are true R is not the correct explanation of A (C) A is true but R is false. (D) A is false but R is true.

Number of words of 4 letters that can be formed with the letters of the word IITJEE is

Find the number of 4 letter words that can be formed using the letters of the word ARTICLE in which at least one letter is repeated

Number of words of 4 letters that can be formed with the letters of the word IIT JEE, is

Number of words of 4 letters that can be formed with the letters of the word IIT JEE, is

Number of words of 4 letters that can be formed with the letters of the word IIT JEE, is

Number of words of 4 letters that can be formed with the letters of the word IIT JEE, is

Number of words of 4 letters that can be formed with the letters of the word IIT JEE, is