20 × 1 + 1² = 21 21 × 2 + 2² = 46 46 × 3 + 3² = 147 147 × 4 + 4² = 604 604 × 5 + 5² = 3045 Hence, x = 21 Hence, 25×21/100 = 21/4 = 5.25
640 322 164 86 48 ?
...18 22 49 ? 190 226
...542 541 532 507 458 ?
...219 365 511 ? 803 949
...To find the Next number in the given series.
342 510 726 996 1326 ?
...102, 246, 442, 698, 1022, ?
6 , 21, 116, ?, 4674, 33593
83, 88, 86, 91, 89, ?
2, 17, 147, 1167, 8157, 48957
34, 18, 20, ?, 70, 180
