There are 6 consonants and 4 vowels Number of words formed with 2 consonants and 2 vowels ........

Quantitative Aptitude (CDS) Permutation & Combination

There are 6 consonants and 4 vowels. Number of words formed with 2 consonants and 2 vowels

There 6 constant and 4 vowels
2 constant and 2 vowels
= (6C2 x 4C2)
=6! /4!2! ×4! /2!2!
=(6×5/2) 4×3/2
=15 ×6
=90

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