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A student can either buy one pen and one notebook, choosing from 3 pens and 4 notebooks, or buy one of 5 pencils. How many different purchase options are there?

Answer and explanation

Correct answer: 17 options

Choosing a pen and a notebook gives 3 × 4 = 12 options. Buying a pencil gives 5 other options. Since these are alternative purchases, add them: 12 + 5 = 17.

Related tags

Permutations And CombinationsAddition And Multiplication PrinciplesFundamental Principle Of CountingMathematicsClass 11 Mcq

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