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A teacher creates a question by choosing one chapter from (6) chapters and one level from (5) difficulty levels. How many question settings are possible?

Answer and explanation

Correct answer: (30) settings

The governing principle is multiplication for independent choices. To create one setting, the teacher must select both a chapter and a difficulty level. There are 6 possible chapter choices. For every selected chapter, any of the 5 difficulty levels can be used, so each chapter produces 5 settings. Consequently, the total is 6 × 5 = 30 settings. Option A is correct. Adding 6 and 5 gives option B, but addition would count alternatives rather than a combined chapter-level pair. Option C is the square of 5 and ignores the six chapters, while option D is an unsupported product. Because both choices are required simultaneously, multiplication is the appropriate operation.

Related tags

Permutations-CombinationsFundamental-Principle-Of-CountingProduct-RuleFundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq

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