Number Series Puzzles · Billy-B
Number Series #33
From Billy-B's legendary 1001 Puzzle Collection — preserved on Puzz.com since 1998.
Puzzle #33
Occasionally things are presented to us in an unusual, yet completely logical order. 2 5 12 23 30 17 8 ?
Reveal Answer
3. After adding 1 to 2, the first number, an additional number is added to each resulting number, yielding 3, 5, 8, 12, etc — The first number is written on the far left, the second number is on the far right, the third number is second from the left, the fourth number is second from the right, & so on.
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