MathCastle
Counting & ProbabilityChallenge

Counting & Probability · Challenge problem

How many of the integers 1,2,…,23101,2,\dots,2310 are relatively prime to 2310=2⋅3⋅5⋅7⋅112310 = 2\cdot 3\cdot 5\cdot 7\cdot 11?

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