Can you solve this puzzle?
Place + and - signs between digits to make 100.
123456789
Place + and - signs between digits to make 100.
123456789
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What is the area of the shaded region below? How do you know?  Can you solve this challenge that is based on the Proof card game? https://www.proofmathgame.com/math-puzzles/76 Here is their archive of past challenges: https://www.proofmathgame.com/math-puzzles/past  Nine cards, each uniquely marked with a single-digit from 1 to 9, are randomly dealt to three players, each player receiving three cards. Every player sees his own cards, but is unaware of the cards in other players' hands.
Each player declares the sum of the three cards in his own hands. Based upon this information, the players try to guess the cards in their opponents' hands. Imagine players A, B, and C play this game, and the following conversation ensues: A: The sum of my cards is 14. B: The sum of my cards is 15. C. The sum of my cards, obviously, is 16. A. I can't guess any card in B's hand. B. I can't guess any card in C's hand. C. I know the cards in everyone's hands. What are the cards in player B's hand? Explain your reasoning. If the white triangle is worth 1, what is the value of each other polygon?  Source (and many more of these puzzles): https://photos.google.com/share/AF1QipPUhHweMG3cpSQ2CRL0scB2KtIKi2D6UFLrLtVuBNpr_z-UWsqce6nzZGmkWi5UWA?key=QlZfb2Rtd05vbXRiVklUSldiUGVTSVMxd2hINXJn
In this problem, each different letter stands for a different digit. Can you find the value of each letter?
S E N D + M O R E M O N E Y |
