0
$\begingroup$

I have this sequence:

24, 63, 10, 48, 35, 72, 44....

The next number is

80.

How is this the correct answer?

|improve this question
$\endgroup$
  • $\begingroup$ All of those are composite numbers: 4x6, 7x9, 2x5, 6x8, 5x7, 8x9, 4x11 (and also 8x10). That might have something to do with it. $\endgroup$ – Levieux Feb 13 '17 at 12:41
  • $\begingroup$ More than that: most of them are of the form n^2-1. 25, 64, 11, 49, 36, 73, 45, 81. $\endgroup$ – Gareth McCaughan♦ Feb 13 '17 at 12:59
8
$\begingroup$

One possible answer that works for finding the next number, but not the entire sequence is

The number sequence is generated in pairs with a descending sum
24 + 39 = 63
10 + 38 = 48
35 + 37 = 72

This would imply the next number in the sequence is

44 + 36 = 80

|improve this answer
$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.