I recently attempted Amazon OA for SDE-1 position, these were the questions asked:\n* Easy question based on combinatorics, basically nCr formula. (Couldn\'t find a similar question on LeetCode)\n* Sell Diminishing-Valued Colored Balls: https://leetcode.com/problems/sell-diminishing-valued-colored-balls/\n\nHope this helps!

I recently attempted Amazon OA for SDE-1 position, these were the questions asked:\n Easy question based on combinatorics, basically nCr formula. (Couldn\'t fin