Number Sequence

Number Sequence — 2026-08-22

Write the next number in each sequence, then check the answers below.

1. 1, 3, 6, 10, 15, ____
2. 3, 4, 6, 9, 13, ____
3. 2, 6, 18, 54, 162, ____
4. 16, 25, 36, 49, 64, ____
5. 2, 4, 6, 10, 16, ____

Answers

1. 21
2. 18
3. 486
4. 81
5. 26