expert Set 12 Logic Puzzle

Expert Sequence Pattern #12

Title
Expert Sequence Pattern #12
SequenceType
seq-numbers
DisplaySequence
  • 1
  • -1
  • -3
  • _
  • _
  • -9
  • _
  • -13
  • _
  • -17
FullSequence
  • 1
  • -1
  • -3
  • -5
  • -7
  • -9
  • -11
  • -13
  • -15
  • -17
BlankPositions
  • 3
  • 4
  • 6
  • 8
Answers
  • -5
  • -7
  • -11
  • -15
Rule
Subtract 2 each time (start at 1)
Question
Find the 4 missing terms in the sequence: 1, -1, -3, _, _, -9, _, -13, _, -17
SequenceLength
10
Hint
Look at the difference between each consecutive pair.