hard Set 55 Logic Puzzle

Hard Sequence Pattern #55

Title
Hard Sequence Pattern #55
SequenceType
seq-mixed
DisplaySequence
  • 3
  • _
  • 6
  • 15
  • _
  • 19
  • 12
  • _
  • 15
  • 27
FullSequence
  • 3
  • 11
  • 6
  • 15
  • 9
  • 19
  • 12
  • 23
  • 15
  • 27
BlankPositions
  • 1
  • 4
  • 7
Answers
  • 11
  • 9
  • 23
Rule
Two interleaved arithmetic sequences
Question
Find the 3 missing terms in the sequence: 3, _, 6, 15, _, 19, 12, _, 15, 27
SequenceLength
10
Hint
Look at every other term separately.