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The number 7038 lies between 83² and 84². So if we add 18 to the number 7038, we get a perfect square, i.e. we get a perfect square, i.e. 84² = 7056, i.e. 7038 + 18 = 7056 = 84².
186, 179, 170, 162, 146, 131, 114
Find the wrong number in the given number series.
16.5, 31, 82.5, 165, 412.5, 825
16 18 25 52 116 241 457
5 4 15 36 107 226
7, 15, 31, 79, 271, 1221
9, 10, 12, 18, 42, 160
324, 314, 294, 264, 224, 184
2, 9, 32, 87, 198, 387
6 9 14 22 30 41
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