In how many ways can 7 plus (+) signs and 5 minus (-) signs be arranged in a row so that…
Mathematics · JEE Main · NTA Exams — Permutations and Combinations
In how many ways can 7 plus (+) signs and 5 minus (-) signs be arranged in a row so that no two minus (-) signs are together?
- 60
- 720
- 140
- 56
Answer
(D) 56
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