Correct option is C
Given:
12:145::9:82::11:?
Logic:
+ 1 = Second number
Now,
first pair (12:145)
= 144 +1 = 145
second pair (9:82)
= 81+1=82
Apply the same relation to the third pair (11:?)
= 121 +1 = 122
The number related to 11 is 122.
Thus, correct option is (c)