64 = 8 x 8
81 = 9 x 9
100 = 10 x 10
121 = 11 x 11
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There are 24 perfect squares between 50 and 1000.
72 = 49 < 50 < 64 = 82 and 122 = 144 < 150 < 169 = 132 So the squares of 8 to 12 ie 64, 81, 100, 121 and 144 are in the specified interval.
It is 100 that is a perfect square between 50 and 150
72 = 49 < 50 < 64 = 82 and 122 = 144 < 150 < 169 = 132
Including 2500, it's 42,785.