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BEFORE YOU START x
PART ONE Probability 1 Pascals Probability Pinball
Toss a Coin
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5-quart 7-quart container alphabet angles axis ball binary numeration system bound edge cards cipher circle clockwise coin computing board connect counterclockwise crank arm curve cylinder diamond digit disk four disk three distance eight ellipse Embroidery hoops empty peg flat flexagon Flexatube fractions frame globe googol googolplex grinder groups holes hoop hyperbolic paraboloid inside large number length loop of thread marble mathe mathematical mobile move disk nails needle number of BB's obtained operations pantograph Pascal's triangle paths pencil pieces place disk pocket polar graph paper possible probability pinball machine problem punch quarts represent roll rotate screws second-row seesaw sets of lines shape shown in Figure side single BB sinkers sliders slot smaller soap bubbles soap films soap solution space spins and flips square substitution cipher tion topologically equivalent torque total number Tower of Hanoi transposition cipher triangular tube washers wire yarn