I am a fraction greater than 1/2 My numerator is 3 less than my denominator
If you add 1/4 to me, you'd have 7/8
Which fraction am I?

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236