Number Series Puzzles · Billy-B
Number Series #7
From Billy-B's legendary 1001 Puzzle Collection — preserved on Puzz.com since 1998.
Puzzle #7
1 2 13 0 3 03 ?
Reveal Answer
1 2 13 0 3 03 1 The number of days in each month, but only the second digit is given for January, first digit for February, March is backward, and then the series repeats, beginning with April.
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