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(O) In how many ways can 4 boys and 3 girls beseated in a row of 7 chairs if boys and girlsalternate ?(ii) In how many ways can 4 boys and 3 girls beseated in a row so that no two girls are together ?(ii) In how many ways can 5 girls and 3 boys beseated in a row so that no two boys are together ?(N.C.E.R.T. H.P.B. 2o11 |
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