Selecting 1 vowel 2 consonants (arrangement in which vowel is at middle place) ‌=(‌3C1⋅‌4C2)2!+(‌3C1⋅‌1C1)⋅1 ‌=3×6×2+3=39 Similarly, Selecting, 2 vowels 1 consonant =‌3C2⋅‌4C1(2!)×2=3×4×4=48 Selecting 3 vowels =3!=6 Total words =39+48+6=93
