Sequence Pattern Seq Mixed Hard — Set 33

Hard Sequence Pattern #33

Title

Hard Sequence Pattern #33

SequenceType

seq-mixed

DisplaySequence

• 1
• _
• 6
• 15
• _
• 18
• 16
• _
• 21
• 24

FullSequence

• 1
• 12
• 6
• 15
• 11
• 18
• 16
• 21
• 21
• 24

BlankPositions

• 1
• 4
• 7

Answers

• 12
• 11
• 21

Rule

Two interleaved arithmetic sequences

Question

Find the 3 missing terms in the sequence: 1, _, 6, 15, _, 18, 16, _, 21, 24

SequenceLength

10

Hint

Look at every other term separately.