Find ‘x’

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Alp1ne14
The spacing is -4, -2, 0, 2, 4, so the last spacing should be 6.

6 + 6 = 12
Cosmavia
12 is right
SweatyFingers6969
wtf this is so hard
Alp1ne14
Ok.

This one does not involve math.

8, 5, 4, 9, 1, 7, 6, 3, 2, x
Cosmavia
0?
Iconic-Ninja
10?
Alp1ne14
0 is correct.

The numbers were sorted in alphabetical order
DumDolphin09

Why can’t y find his x by himself, why do we have to?

owengarriott
1,3,7,13,21,31,43,57,x
Alp1ne14
The spacing is 2, 4, 6, 8, 10, 12, and 14.

So the next spacing should be 16.

So, 73 should be the answer
owengarriott
#86 correct!
owengarriott
1,3,6,11,18,29,42,59,78,x
Alp1ne14
2, 3, 5, 7, 11, 13, 17, 19 is the spacing
Alp1ne14
You missed 15
Alp1ne14
Anyway, I guess 99
owengarriott
#91 wrong the spacing is prime numbers so 101
Alp1ne14
Ok.

1, 2, 8, 48, x
owengarriott
384?
Alp1ne14
384 is correct
DeltaCrimson

How do you get 384? Can you explain the sequence?