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JEEMAIN and NEET
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Mathematics
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Class11
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Permutations and Combinations
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In how many ways can 7 plus (+) signs and 4 minus (-) signs can be arranged in a row so that no two minus signs are together?
$\begin{array}{1 1}(11)! \\ ^7C_4 \\ 7!.4! \\ 70 \end{array}$
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