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Other than abnormal farms like Animal Farm, there’s a farm referred to as ‘Cows Training Farm’, which is a farm that trains $15$ very orz cows. Each yr, six cows are chosen to hitch a contest. Mason is now guessing which six cows would enter that competitors. If he guesses at the very least three cows accurately, his guess is claimed to be correct. Suppose Mason is wise and has an optimum technique for guessing. How many occasions at most would Mason need to guess, such that at the very least one guess is correct?

This drawback is an unused drawback proposed for a comparatively unknown small contest, through which I’m one of many drawback setters and I desire to not point out that contest right here.

Bonus: Try to do that drawback when there are extra cows. Can you generalize? (I’m concerned about if there’s a good generalization)

This drawback is my first drawback after one and a half years. Hope you prefer it!

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