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How many numbers between 1 and 1000 have the property that the sum of their digits is equal to 3?

+1 vote
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How many numbers between 1 and 1000 have the property that the sum of their digits is equal to 3?
posted Dec 31, 2018 by Anuradha Tabyal

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2 Answers

0 votes

3, 12, 21, 30, 39, 48, 57, 66, 75, 84, 93, 102, 111, 120, 129, 138, 147, 156, 165, 174, 183, 192, 201, 210, 219, 228, 237, 246, 255, 264, 273, 282, 291, 300, 309, 318, 327, 336, 345, 354, 363, 372, 381, 390, 399, 408, 417, 426, 435, 444, 453, 462, 471, 480, 489, 498, 507, 516, 525, 534, 543, 552, 561, 570, 579, 588, 597, 606, 615, 624, 633, 642, 651, 660, 669, 678, 687, 696, 705, 714, 723, 732, 741, 750, 759, 768, 777, 786, 795, 804, 813, 822, 831, 840, 849, 858, 867, 876, 885, 894, 903, 912, 921, 930, 939, 948, 957, 966, 975, 984, 993.
are all the numbers between 1 and 1000 that have their sum of digits = 3 and they are 111 in total.

answer Jan 1, 2019 by Tejas Naik
0 votes

3, 12, 21, 30, 102, 111, 120, 201, 210, 300- ten in total

answer Jan 3, 2019 by Hanifa Mammadov
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