hard Set 39 Logic Puzzle

Hard Sequence Pattern #39

Title
Hard Sequence Pattern #39
SequenceType
seq-arithmetic
DisplaySequence
  • 20
  • _
  • 14
  • 11
  • _
  • 5
  • 2
  • _
  • -4
  • -7
FullSequence
  • 20
  • 17
  • 14
  • 11
  • 8
  • 5
  • 2
  • -1
  • -4
  • -7
BlankPositions
  • 1
  • 4
  • 7
Answers
  • 17
  • 8
  • -1
Rule
Subtract 3 each time (start at 20)
Question
Find the 3 missing terms in the sequence: 20, _, 14, 11, _, 5, 2, _, -4, -7
SequenceLength
10
Hint
Look at the difference between each consecutive pair.