Math & Logic · Ages 12–15
Riddle #151
What is the next number in this sequence: 2, 6, 12, 20, 30, ?
You solved this one before
Answer: 42
The differences between terms increase by 2 each time (4, 6, 8, 10, 12); each term is n×(n+1).
Math & Logic · Ages 12–15
What is the next number in this sequence: 2, 6, 12, 20, 30, ?
You solved this one before
Answer: 42
The differences between terms increase by 2 each time (4, 6, 8, 10, 12); each term is n×(n+1).