Sequence Pattern Seq Mixed Hard — Set 100

Hard Sequence Pattern #100

Title

Hard Sequence Pattern #100

SequenceType

seq-mixed

DisplaySequence

• 1
• _
• 4
• 16
• _
• 21
• 10
• _
• 13
• 31

FullSequence

• 1
• 11
• 4
• 16
• 7
• 21
• 10
• 26
• 13
• 31

BlankPositions

• 1
• 4
• 7

Answers

• 11
• 7
• 26

Rule

Two interleaved arithmetic sequences

Question

Find the 3 missing terms in the sequence: 1, _, 4, 16, _, 21, 10, _, 13, 31

SequenceLength

10

Hint

Look at every other term separately.