[" 4.How many different words beginning and ending with a consonant can be made out of the letter "],[" of the word 'EQUATION? "]

How many different words. Beinging and ending with a consonant can be made out of the letters of the word ' EQUATIONS' ?

The number of different words ending and beginning with a consonant which can be made out of the letters of the word '' EQUATION '' is :

The different words beging and ending with a vowel that can made with the letters of the word EQUATION is

The number of different words (eight-letter words) ending and beginning with a consonant which can be made out of the letters of the word 'EQUATION' is

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

How many words beginning with vowels can be formed with the letters of the word EQUATION?

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