SSC Steno Grade C and D 12 Sep 2017 Shift 1 Paper

(2) Except the number–pair13–199, in all other numberpairsthe second number is theperfect square of the first number.
11×11 = 121
14 × 14 = 196
15 × 15 = 225
But, 13 ×13 = 169 (Not199)