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Rob Pratt

NC, USA

  • Senior R&D Manager, SAS Institute Inc.
  • Ph.D. in Operations Research, The University of North Carolina at Chapel Hill
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Top Questions
Top Answers
56
What is the optimal number of dice to roll a Yahtzee in one roll?
math.stackexchange.com

42
What is the closed form of the $f$ with $f(1)=1$, $f(2)=7$ and $f(n)=7f(n-1)-12f(n-2)$ ($n\ge 3$)?
math.stackexchange.com

39
What is the optimal number of dice to roll a Yahtzee in one roll?
mathoverflow.net

30
Checkmate 30 kings with rooks
puzzling.stackexchange.com

29
Social distancing in a 5x5 room
puzzling.stackexchange.com

26
Which heptomino is it obvious can't tile the plane?
puzzling.stackexchange.com

25
How to linearize the product of two binary variables?
or.stackexchange.com

25
What node does 11 point to?
puzzling.stackexchange.com

24
A COVID-19 puzzle: How large a class do you need to fit 30 pupils?
puzzling.stackexchange.com

24
Is there a generating function for any finite sequence of random numbers?
math.stackexchange.com

23
Can we arrange $\{1,...,16\}$ in $4\times 4$-grid so {products of rows} = {products of columns}?
math.stackexchange.com

22
Three queens and two rooks covering the chess board... again!
puzzling.stackexchange.com

22
A Rook's Territory in the Chessboard
puzzling.stackexchange.com

20
Is there way to solve this minesweeper without guessing?
puzzling.stackexchange.com

20
How many ways can you find the word DIAMOND in this diamond?
puzzling.stackexchange.com

20
Listing all posets on 9 points?
mathoverflow.net

20
How to linearize membership in a finite set
or.stackexchange.com

20
A rook's tour of the chessboard
puzzling.stackexchange.com

19
The Greenhouse Problem
puzzling.stackexchange.com

19
I Hate Traffic And So Do You
puzzling.stackexchange.com

18
Can the (famous) "Problem of Apollonius" be Considered as a "Constraint Optimization" Problem?
or.stackexchange.com

18
How to fully tile an 8 by 8 square with Z-tetrominoes?
puzzling.stackexchange.com

18
TSP with revenue maximization
or.stackexchange.com

17
11 cyclists in a race
puzzling.stackexchange.com

17
Is there a Linear Programming Library that natively supports fractions instead of floating point arithmetic?
or.stackexchange.com

16
Optimal search puzzle
mathoverflow.net

16
Numerical Boggle
puzzling.stackexchange.com

16
Prime lights out
puzzling.stackexchange.com

16
Are there any math jokes told entirely with symbols?
math.stackexchange.com

16
Moving around a plane
puzzling.stackexchange.com

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