hard Set 6 Logic Puzzle

Hard Sequence Pattern #6

Title
Hard Sequence Pattern #6
SequenceType
seq-mixed
DisplaySequence
  • 3
  • _
  • 6
  • 17
  • _
  • 21
  • 12
  • _
  • 15
  • 29
FullSequence
  • 3
  • 13
  • 6
  • 17
  • 9
  • 21
  • 12
  • 25
  • 15
  • 29
BlankPositions
  • 1
  • 4
  • 7
Answers
  • 13
  • 9
  • 25
Rule
Two interleaved arithmetic sequences
Question
Find the 3 missing terms in the sequence: 3, _, 6, 17, _, 21, 12, _, 15, 29
SequenceLength
10
Hint
Look at every other term separately.