hard Set 38 Logic Puzzle

Hard Sequence Pattern #38

Title
Hard Sequence Pattern #38
SequenceType
seq-numbers
DisplaySequence
  • 18
  • _
  • 24
  • 27
  • _
  • 33
  • 36
  • _
  • 42
  • 45
FullSequence
  • 18
  • 21
  • 24
  • 27
  • 30
  • 33
  • 36
  • 39
  • 42
  • 45
BlankPositions
  • 1
  • 4
  • 7
Answers
  • 21
  • 30
  • 39
Rule
Add 3 each time (start at 18)
Question
Find the 3 missing terms in the sequence: 18, _, 24, 27, _, 33, 36, _, 42, 45
SequenceLength
10
Hint
Look at the difference between each consecutive pair.