Posted by john on .
1x3=3, 2x3=6, 3x3=9, 4x3=12, 5x3=5, 6x3=18, 7x3=21, 8x3=24, 9x3=27, 10x3=30, 11x3=33, 12x3=36,
1x6=6, 2x6=12, 3x6=18, 4x6=24, 5x6=30, 6x6=36
1x12=12, 2x12=24, 2x12=36
What patterns do you notice?

math 
MathMate,
apart from: 5x3=5 should read 5x3=15
What do you notice?
Have you counted the number of multiplications in each group?