VISIBILITY RULES

• 2 = end is even, divisible by 2 (0, 2, etc.)

  3= sum all is div by 3

  4= last two digits (not added) is div by 4

  5= last num ends with 0 or 5

  6= div of both 2 and 3

  7= double end num, subtract to remaining numbers (no added). Answer should be 0 or div by 7

  8= last 3 digits div by 8, even

  9= sum digits div by 9

  11= sum even and odd when subtracted is 0 or div by 11