self Maths Puzzle

Below are given six three-digit numbers. The digits comprise of numeric and letters. The letter indicates its serial order in the English alphabet. What will be the middle digit of the 4th number when the numbers are arranged in the descending order after interchanging numeric in each number without altering the place of letter in the number?
19F, 2H9, 98B, D76, 7A6, 61E
(a) 8
(b) 9
(c) 6
(d) 7
(e) None of these

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self Other Question
Four of the following five groups of letters are alike in some way while one is different. Find out which one is different.
(a) ISLOJ
(b) LUOQM
(c) AKDGB
(d) FPILG
(e) NXQTO Reaching a place of appointment on Friday I found that I was two days earlier than the scheduled day. If I had reached on the following Wednesday how many days late would I have been.
(a) one day
(b) two days
(c) three days
(d) four days
(e) None of these