The answer would be mr. This is because a is the 1st letter in the alphabet and z is the 26th (last). Then, d is the 4th and x is the 24th. As you can see each time the pattern increases by 3 for the first letters and decreases by 2 for the second letters. So, if you keep on going and get to jt. J is the 10th letter in the alphabet and t is the 20th. Now, you just need to add 3 to 10 and subtract 2 from 20. This leaves 13 and 18. M is the 13th letter and R is the 18th.
