How many words, with or without meaning, each of 2 vowels and 3 consonants can be formed from the letters of the word DAUGHTER ?

How many words, with or without meaning, each of 3 vowels and 2 consonants, can be formed from the letters of the word ‘INVOLUTE’ ?

How many 4-letter words, with or without meaning, can be formed out of the letters of the word, ‘LOGARITHMS’, if repetition of letters is not allowed ?

How many words, with or without meaning, can be formed using all the letters of the word EQUATION at a time so that the vowels and consonants occur together?

The English alphabet has 5 vowels and 21 consonants. How many words with two different vowels and 2 different consonants can be formed from the alphabet ?

How many words, with or without meaning, can be formed using all the letters of the word EQUATION, using each letter exactly once?

How many permutations can be made out of the letters of the word 'TRIANGLE ' ?

How many words, with or without meaning can be made from the letters of the word MONDAY, assuming that no letter is repeated, if, all letters are used but first letter is a vowel?