11, 22, 33, 44, 55, 66, 77, 88, 99
Just 77.
' 1 ' is a factor of every whole number . . . . . 100 of them' 2 ' is a factor of every even number . . . . . 50 of them' 3 ' has 33 multiples up to 100 . . . . . 33 of them' 4 ' has 25 multiples up to 100 . . . . . 25 of them' 5 ' has 20 multiples up to 100 . . . . . 20 of them' 6 ' has 16 multiples up to 100 . . . . . 16 of them' 7 ' has 14 multiples up to 100 . . . . . 14 of them' 8 ' has 12 multiples up to 100 . . . . . 12 of them' 9 ' has 11 multiples up to 100 . . . . . 11 of themTotal . . . . . . . . . . . . . . . . . . . . . . . . . 281 one-digit factors in all whole numbers 1 to 100 .
All the multiples of 11 up to 100 except 11 itself which is a prime number
Just 77.
11, 22, 33, 44, 55, 66, 77, 88, 99.
There are 11 multiples of 9 up to 100. 9 18 27 36 45 54 63 72 81 90 99
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.
60 and 42 have no common multiples under 100.
6,12,18,24,30,36,42,48,54,60,66,72,78,84,90,96
17,34,51,68,85
25, 50, 75, 100.
36, 72.