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there are 6 '+' and 4 '-'. How many ways of arrangement are there such that no two '-' occur together?

there are 6 '+' and 4 '-'. How many ways of arrangement are there such that no two '-' occur together?

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1 Answers

Sher Mohammad IIT Delhi
askIITians Faculty 174 Points
9 years ago
put +signs in a row with one gap between each pair thus seven blanks created. now we can put - signs in these places. so 7C4 ways. all + and - signs are identical so only one way

so 7C4 ans

Sher Mohammad
faculty askiitians

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