How many 4-letter code can be formed using the first 10 letters of the English alphabet, if no letter can be repeated?

How many 4 - letter codes can be formed using the first 10 letters of the English alphabet, if no letter can be repeated?

How many 3 letter code combinations are possible using the first 10 letters of English alphbets if: i. no letter can be repeated, ii. letters can be repeated.

How many words can be formed using the letters of the word INDIA

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

How many three letter words can be formed using the letters of the word NARESH? (Repetition of letters is not allowed)

How many codes containing 3 letters can be formed with the 9 letters of English alphabet if repetition is not allowed?

the letter O of the English alphabet has how many lines of symmetry

Find the number of 5 lettered palindromes which can be formed using the letters from the English alphabets

The letter Z of the English alphabet has how many lines of symmetry

How many words can be formed using the letter A thrice,the letter B twice and the letter C thrice?