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Class 11MathematicsPermutations and CombinationsCombinationsHard
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From (9) subjects (4) subjects are to be selected. Chemistry must be selected but mathematics and physics must not both be selected together. How many ways are there?

Answer and explanation

Correct answer: (50)

Chemistry is fixed so choose the remaining (3) subjects from (8). Removing (6) selections containing both mathematics and physics leaves (50) ways.

Related tags

CombinationsClass11HardPermutations And CombinationsMathematicsClass 11 Mcq
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