Mathematics · Permutations and Combinations
Let a, b, c and d be four positive integers such that a + b + c + d = 200. If S = (-1)a + (-1)b + (-1)c + (-1)d, then what is the number of possible values of S?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Four
- 2Three✓
- 3Two
- 4One
Correct answer
Three
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