5, 10, 6.5, 8.5, 8, 7, 9, 5.5, 5,
What is the next number in the sequence?
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Sign up to join this community5, 10, 6.5, 8.5, 8, 7, 9, 5.5, 5,
What is the next number in the sequence?
I'm wondering if there might be a typo in the sequence and it should read something like this
5, 10, 6.5, 8.5, 8, 7, 9.5, 5.5
This would involve swapping the last two commas for periods and the last period for a comma.
The reason I suggest this is that now the sequence follows a nice pattern
5 + 10 - 6.5 = 8.5
10 + 6.5 - 8.5 = 8
6.5 + 8.5 - 8 = 7
8.5 + 8 - 7 = 9.5
8 + 7 - 9.5 = 5.5
7 + 9.5 - 5.5 = 11
So the next term in the sequence would be 11
The other idea I had was that
We ignore elements of the sequence in the odd positions to get
_, 10, _, 8.5, _, 7, _, 5.5, _
Then we see that the elements in even positions follow an arithmetic sequence and the next element should be 4.
I don't prefer this one though because it involves dropping half of the elements.