Question

What are the next three terms in the sequences below?

1. 2, 5, 7, 12, ,
2. 9, 11, 20, 31,
3. 2, 5, 10, 50,
4. 1, 3, 3, 9,

Answer 1

1. 19, 31, 50
2. 51, 82, 133
3. 500, 25000, 12500000
4. 27, 243, 6561