Puzzle Detail
Sequence Pattern Seq Triangle Nums Expert — Set 20
Expert Sequence Pattern #20
- Title
- Expert Sequence Pattern #20
- SequenceType
- seq-triangle-nums
- DisplaySequence
- 1
- 3
- _
- 10
- 15
- 21
- _
- _
- _
- 55
- FullSequence
- 1
- 3
- 6
- 10
- 15
- 21
- 28
- 36
- 45
- 55
- BlankPositions
- 2
- 6
- 7
- 8
- Answers
- 6
- 28
- 36
- 45
- Rule
- Triangular numbers: 1, 3, 6, 10, 15 …
- Question
- Find the 4 missing terms in the sequence: 1, 3, _, 10, 15, 21, _, _, _, 55
- SequenceLength
- 10
- Hint
- Add 1 more than you added before each time.