sam
How many different arrangements consisting of 3 letters beginning and ending with different consonants and having a vowel in the middle can be made with the letters REDIAL?
Fahim
E,(P,N,I,L),C
E & C has fixed position. P,N,I,L 4 letters can make different arrangements by changing their position. No. of ways of their arrangements is 4!=24
so, 24 arrangements can be possible