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How many possible 3 number combination by using numbers 1 through 30? - Answers

Easier to find the ones that aren't possible, then subtract that from 900 total 3-digit numbers. Assuming we can use the same number more than once (e.g. 555) Not possible: 100 140 150 160 170 180 190 => (7) 200 240 250 260 270 280 290 => (7) 300 340 350 360 370 380 390 => (7) 40* 440 450 460 470 480 490 => (16) 50* 540 550 560 570 580 590 => (16) 60* 640 650 660 670 680 690 => (16) 70* 740 750 760 770 780 790 => (16) 80* 840 850 860 870 880 890 => (16) 90* 940 950 960 970 980 990 => (16) 117 not possible 900 - 117 = 783 possible



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How many possible 3 number combination by using numbers 1 through 30? - Answers

https://math.answers.com/other-math/How_many_possible_3_number_combination_by_using_numbers_1_through_30

Easier to find the ones that aren't possible, then subtract that from 900 total 3-digit numbers. Assuming we can use the same number more than once (e.g. 555) Not possible: 100 140 150 160 170 180 190 => (7) 200 240 250 260 270 280 290 => (7) 300 340 350 360 370 380 390 => (7) 40* 440 450 460 470 480 490 => (16) 50* 540 550 560 570 580 590 => (16) 60* 640 650 660 670 680 690 => (16) 70* 740 750 760 770 780 790 => (16) 80* 840 850 860 870 880 890 => (16) 90* 940 950 960 970 980 990 => (16) 117 not possible 900 - 117 = 783 possible



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https://math.answers.com/other-math/How_many_possible_3_number_combination_by_using_numbers_1_through_30

How many possible 3 number combination by using numbers 1 through 30? - Answers

Easier to find the ones that aren't possible, then subtract that from 900 total 3-digit numbers. Assuming we can use the same number more than once (e.g. 555) Not possible: 100 140 150 160 170 180 190 => (7) 200 240 250 260 270 280 290 => (7) 300 340 350 360 370 380 390 => (7) 40* 440 450 460 470 480 490 => (16) 50* 540 550 560 570 580 590 => (16) 60* 640 650 660 670 680 690 => (16) 70* 740 750 760 770 780 790 => (16) 80* 840 850 860 870 880 890 => (16) 90* 940 950 960 970 980 990 => (16) 117 not possible 900 - 117 = 783 possible

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      Easier to find the ones that aren't possible, then subtract that from 900 total 3-digit numbers. Assuming we can use the same number more than once (e.g. 555) Not possible: 100 140 150 160 170 180 190 => (7) 200 240 250 260 270 280 290 => (7) 300 340 350 360 370 380 390 => (7) 40* 440 450 460 470 480 490 => (16) 50* 540 550 560 570 580 590 => (16) 60* 640 650 660 670 680 690 => (16) 70* 740 750 760 770 780 790 => (16) 80* 840 850 860 870 880 890 => (16) 90* 940 950 960 970 980 990 => (16) 117 not possible 900 - 117 = 783 possible
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