Select the alphanumeric cluster that can replace the question mark (?) in the following series.

Y88, T84, O79, J73, E66, ?

Given: Y88, T84, O79, J73, E66, ?

Logic: Each letter is decreasing by - 5, and the numbers are also decreasing by −4, −5, −6, −7.

First letters: Y, T, O, J, E, ?

Y - 5 → T - 5 → O - 5 → J - 5 → E - 5 →Z.

​Identifying the Number Pattern

The given numbers are:
88, 84, 79, 73, 66, ?

88 - 84 = 4

84 - 79 = 5

79 - 73 = 6

73 - 66 = 7

The next decrease should be −8

66 - 8 = 58

Thus, the correct option is (d) 58.