81, 162, 243, 324, 405, 486, 567, 648, 729, 810, 891, 972.
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 multiples of 3 have digits that add up to a multiple of 3. There are 333 multiples of 3 between 1 and 1000.
There are 11 multiples of 9 up to 100. 9 18 27 36 45 54 63 72 81 90 99
That the sum of its digits add up to 9 as for example 9*9 = 81 and 8+1 = 9
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.
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.
250
16, 81, 256, 625 all have five factors.
All multiples of 3 have digits that add up to a multiple of 3. There are 333 multiples of 3 between 1 and 1000.
72, 81, 90
27, 54, 81, 108, 136, 162, 189, 216
There are 143 such numbers, too many to list.
All multiples of 3 have digits that add up to a multiple of 3. There are 333 multiples of 3 between 1 and 1000.
There are 11 multiples of 9 up to 100. 9 18 27 36 45 54 63 72 81 90 99