There are 200 of them. Starting with 45*23 = 1035 and all the multiples of 45 up to 45*222 = 9990.
I presume you mean what are all the multiples of 9 up to 100 (and not what are all the multiples of 9, 10, 11, ..., 100 of which there are infinitely many): 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99.
All multiples of 3 have digits that add up to a multiple of 3. There are 333 multiples of 3 between 1 and 1000.
All the multiples of 5 between 1 and 51 are: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 These add up to 275.
All multiples of 3 have digits that add up to a multiple of 3. There are 333 multiples of 3 between 1 and 1000.
Multiples of 25 up to 1000 are: 25;50;75;100;125;150;175;200;225;250;275;300;325;350;375;400;425;450;475; 500;525;550;575;600;625;650;675;700;725;750;775;800;825;850;875;900;925;950;975;1000
All of its multiples from 3 to 999
All multiples of 12, such as 120, 600, 660.
Oh, dude, multiples of 4 are like those friends who always show up at your party. They just keep coming. So, to find out how many multiples of 4 are up to 1000, you just divide 1000 by 4, which gives you 250. So, there are 250 multiples of 4 up to 1000. It's like a never-ending party!
15, 30, 45, 60, 75, 90
There are 200 of them. Starting with 45*23 = 1035 and all the multiples of 45 up to 45*222 = 9990.
45 and 18
I presume you mean what are all the multiples of 9 up to 100 (and not what are all the multiples of 9, 10, 11, ..., 100 of which there are infinitely many): 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99.
All multiples of 3 have digits that add up to a multiple of 3. There are 333 multiples of 3 between 1 and 1000.
48121620242832364044485256606468727680848892961001041081121161201241281321361401441481521561601641681721761801841881921962002042082122162202242282322362402442482522562602642682722762802842882922963003043083123163203243283323363403443483523563603643683723763803843883923964004044084124164204244284324364404444484524564604644684724764804844884924965005045085125165205245285325365405445485525565605645685725765805845885925966006046086126166206246286326366406446486526566606646686726766806846886926967007047087127167207247287327367407447487527567607647687727767807847887927968008048088128168208248288328368408448488528568608648688728768808848888928969009049089129169209249289329369409449489529569609649689729769809849889929961000If you simply count by "fours", you'll have them all. Thus you start 4, 8, 12, 16 and end with 988, 992, 996, 1000.
15, 30, and 45 .
All the multiples of 5 between 1 and 51 are: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 These add up to 275.