5172
Using the rule:
Un = (1283n5 - 20690n4 + 124485n3 - 341890n2 + 425212n - 188280)/120 for n = 1, 2, 3, ...
8671
The pattern is that each progressive number is multiplied by 2 and then the digits are reversed. 2 x 4 = 8 → 8 (no change as only 1 digit) 2 x 8 = 16 → 61 2 x 61 = 122 → 221 2 x 221 = 442 → 244 2 x 244 = 488 → 884
22175% off of $884= 75% discount applied to $884= $884 - (75% * $884)= $884- (0.75 * $884)= $884 - 663= 221
221, 442, 663, 884 and so on.
221, 442, 663, 884, 1105.
884 is divisible by: 1, 2, 4, 13, 17, 26, 34, 52, 68, 221, 442, 884.
221/250
1, 2, 4, 13, 17, 26, 34, 52, 68, 221, 442, 884.
1, 2, 4, 13, 17, 26, 34, 52, 68, 221, 442, 884.
x equals 221
1 x 884, 2 x 442, 4 x 221, 13 x 68, 17 x 52, 26 x 34 = 884
12: 1 2 4 13 17 26 34 52 68 221 442 884.