1, 1, 4, 4, 7, 7, 10, 10, _13__ __13_ Describe the Pattern: adding 3 to every other number |
1, 3, 6, 8, 11, 13, 16, 18, _21__ __23_ Describe the Pattern: adding 2, then adding 3 |
3, 6, 11, 18, 27, 38, 51, __66_ _83__ Describe the Pattern: n x n + 2 |
2, 6, 12, 20, 30, 42, 56, _72__ _90__ Describe the Pattern: n x n + n |
1, 11, 111, 1111, 11111, 111111, _1111111__ _11111111__ Describe the Pattern: n x 10 + 1 |
4, 8, 13, 26, 31, 62, 67, 134, 139, ___ ___ Describe the Pattern:multiply by 2, then adding 5 |