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11 * 11 = 121

12 * 12 = 144

13 * 13 = 169

14 * 14 = 196

15 * 15 = 225

16 * 16 = 256

17 * 17 = 289

18 * 18 = 324

19 * 19 = 361

20 * 20 = 400

21 * 21 = 441

22 * 22 = 484

12x12= 144 ,

13x13= 169 ,

14x14= 196,

15x15= 225,

16x16=256,

17x17=289,

18x18=324,

19x19= 361,

20x20= 400,

21x21=441,

22x22=484

Therefore the perfect squares between 100 and 500 are:

121, 144, 169, 196, 225, 256, 289, 324, 361, 400, 441, and 484.