Tom Shively

[Tom Shively @TomShively]

@MeenakshiKart12 @DJ_GreyGhost @engineers_feed Start anywhere, for example the 13. Proceed around the wheel The first number gets a positive sign 36, the next a negative sign, -24, then +11, then -21 and so on to the +1. Add them all up: 36-24+11-21+18-8+1=13. This works for every position as long as the missing number is 21.

[Tom Shively @TomShively]

@tjgolden @LinsonCurt @WindbagVic @Yeakley @MarshallTim they should have called it a dove, sounds so much more Zeppelin

[Tom Shively @TomShively]

@LinsonCurt Looking forward to the wit and wisdom!