26… What is next?

2, 4, 6, 10, 16, 26 __ ? What is next number?

Answer: 57

Solution:

2, 4, 6, 10, 16, 26 …. 42

Track the sequence of adding the previous 2 numbers combined.

2+4 =6

4+6=10

6+10=16

10+16=26

16+26=42

Answer is 42