Out of seven consonants & four vowels, the number of words of six letters, formed by taking four consonants & two vowels, is (Assume each ordered group of letter is a word)

Explanation

Prob`=.^7C_4*.^4C_2*6!`

`(7!)/(4!3!)*(4!)/(2!2!)*6!`

`(7!*6*5*4)`

`30*7*6*5*4*3*2`

`151200`

Option 3 is correct.