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MathNet 2006 — Part 02 Question 10

Math Olympiad Vault · MathNet 2006 — Part 02

Question 10

The Binarilandia lottery draws a 100-digit number 0 and 1 (it can start with 0). A number will be awarded if it matches at least 51 positions with the drawn number. Determine the smallest number of numbers that need to be played to be sure that at least one of them will be awarded.