Daily use english words with hindi meaning

If all the words,with or without meaning,are written using the letters of the word QUEEN and are arranged as in English dictionary,then the position of the word QUEEN is:

In a committee, 50 people speak Hindi, 20 speak English and 10 speak both Hindi and English . How many speak at least one of these two languages ?

(i) In a group of 50 people , 35 speak Hindi , 25 speak both English and Hindi and all people speak atleast one of the two languages . How may people speak only English and not Hindi ? How many people speak English? (ii) In a group of people , 50 speak both English and Hindi and 30 people speak English but not Hindi All the people speak at least one of the two languages . How many people speak English ?

How many words (with or without meaning) of three distinct letters of the English alphabets are there?

How many words (with or without meaning) of three distinct letters of the English alphabet are there?