Number Series Puzzles · Billy-B
Number Series #32
From Billy-B's legendary 1001 Puzzle Collection — preserved on Puzz.com since 1998.
Puzzle #32
If you have double vision, sometimes things appear unbalanced. 31 53 97 275 451 ?
Reveal Answer
803. The first number is 22, but you subtract 1 from the last number, & add it to the first number — Double 22, & then perform the same procedure, & you have 53, & so on.
Love this puzzle?
Explore all 35 number series puzzles from Bill's collection in our number series puzzles — beautifully formatted with instant answer reveal.
See the Full Gallery →⭐ Featured · Bill's Pick
Stickels Brain Teasers
32 pattern-recognition challenges — Terry Stickels's licensed puzzle library is another of Bill's favorites on Puzz.com.
Explore Stickels →