Puzzle 2

This question was asked in an interview at Apple

Profile: Software engineer

Question: If you have 2 eggs, and you want to figure out what's the highest floor from which you can drop the egg without breaking it, how would you do it? What's the optimal solution?

Puzzle 1

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Puzzle 1
Of the 100 people at a recent party, 90 spoke Tamil, 80 spoke Marathi and 75 people spoke Hindi. At least how many people spoke all three languages?