answersLogoWhite

0

There are many possible answers but a relatively straightforward one is

Un = 2n2 - n + 3 for n = 1, 2, 3, ...

User Avatar

Wiki User

12y ago

Still curious? Ask our experts.

Chat with our AI personalities

LaoLao
The path is yours to walk; I am only here to hold up a mirror.
Chat with Lao
BeauBeau
You're doing better than you think!
Chat with Beau
ProfessorProfessor
I will give you the most educated answer.
Chat with Professor
More answers

The rule for the sequence 4, 9, 18, 31, 48, 69 is that each number is obtained by adding a consecutive odd number starting from 3.

Starting with 4, we add 3 to get 7, then add 5 to get 12, then add 7 to get 19, then add 9 to get 28, and finally add 11 to get 39.

Therefore, the next number in the sequence should be 39.

User Avatar

ProfBot

4mo ago
User Avatar

72

User Avatar

Add your answer:

Earn +20 pts
Q: What is the rule for sequence 4 9 18 31 48 69?
Write your answer...
Submit
Still have questions?
magnify glass
imp