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Selection Principle

Class 11 Mathematics के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

MathematicsA set of n objects contains two particular objects. Which expression gives the number of ways to select r objects such that exactly one of the two particular objects is included?Class 11Permutations and CombinationsCombinationsHardMathematicsFrom (9) red and (8) blue balls (6) balls are to be selected with exactly (3) red balls. How many ways are there?Class 11Permutations and CombinationsCombinationsHardMathematicsFrom (10) boys and (8) girls (6) students are to be selected with exactly (4) boys. How many ways are there?Class 11Permutations and CombinationsCombinationsHardMathematicsFrom (5) pens and (6) pencils, in how many ways can (2) pens and (1) pencil be selected?Class 11Permutations and CombinationsCombinationsEasy

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