26, 52, 78 and so on.
26, 52, 78 for example.
26 = 26, 52, 78 52 = 52, 104, 156
26, 52, 78, 104, 130 . . .
The multiples of 13 from 1 to 100 are: 13, 26, 39, 52, 65, 78, 91.
26, 52, 78, 104, 130
13, 26, 39, 52, 65, 78, 91, . . .
Multiples of 26 include 26, 52, 78 and 104. For them to be common, they need to be compared to another set of multiples.
13, 26, 39, 52, 65, 78, 91, 104, 117, 130, 143 . . .
The first 6 multiples of 13 are: 13, 26, 39, 52, 65, 78
13, 26, 39, 52, 65, 78
26, 52, 78, 104, 130.