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Tacky probabilities. Before doing the following experiment, think a bit, and then guess the probability and record it. Cup five identical, standard thumbtacks in your hands. Shake them, and then toss them Tack Landing Lat Jack Landing slightly upward and let them fall onto a against the pont smooth, tiled floor. Count how many of the tacks land completely on their flat side and how many land resting against their points. Repeat this experim ent 10 times, then use your data to estimate the probability of a tossed thumb tack landing point-side down.
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The Heart of Mathematics: An Invitation to Effective Thinking
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