The number of words of four letters consisting of equal number of vowels and consonants (of English Language) with repetition permitted is

The number of words of four letters containing equal number of vowels and consonants, repetition being allowed, is

The number of words of four letters containing equal number of vowels and consonants, where repetition is allowed, is a. 105^2 b. 210xx243 c. 105xx243 d. 150xx21^2

The number of words of four letters containing equal number of vowels and consonants, where repetition is allowed, is a. 105^2 b. 210xx243 c. 105xx243 d. 150xx21^2

The number of words of four letters containing equal number of vowels and consonants, where repetition is allowed,is a.105^(2)b .210xx243c.105xx243d.150xx21^(2)

What is the number of words formed from the letters of the word ‘JOKE’ so that the vowels and consonants alternate ?

What is the number of words formed from the letters of the word 'JOKE',so that the vowels and consonants alternate?

Find the number of 7 lettered words each consisting of 3 vowels and 4 consonants which can be formed using the letters of the word 'DIFFERENTIATION'