Question

How many even, three-digit positive integers have the property that two of the digits are equal, but not all three are equal?

Answer 1

List all of them maybe

100
122
144
166
188

200
244
266
288

300
322
344
366
388

400
422
466
488

500
522
544
566
588

600
622
644
688

700
722
744
766
788

800
822
844
866

900
922
944
966
988

count them
41

answer is 41