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Let the number (?) be x x/432= 243/x x2 = 432 × 243 =216× 2×81×3 = 63×2×34×3 = 63×6×34= 64 ×34= 184 = ((18)2)2 = (324)2 x2= 3242 x = 324
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
...