hard Set 67 Logic Puzzle

Hard Sequence Pattern #67

Title
Hard Sequence Pattern #67
SequenceType
seq-numbers
DisplaySequence
  • 12
  • _
  • -6
  • -15
  • _
  • -33
  • -42
  • _
  • -60
  • -69
FullSequence
  • 12
  • 3
  • -6
  • -15
  • -24
  • -33
  • -42
  • -51
  • -60
  • -69
BlankPositions
  • 1
  • 4
  • 7
Answers
  • 3
  • -24
  • -51
Rule
Subtract 9 each time (start at 12)
Question
Find the 3 missing terms in the sequence: 12, _, -6, -15, _, -33, -42, _, -60, -69
SequenceLength
10
Hint
Look at the difference between each consecutive pair.