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How many elements are in M = {x : x is the name of a day of the week}?

Answer and explanation

Correct answer: 7

A set contains each distinct object only once. The days of a week are Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, and Sunday, giving seven different names. Therefore, M has 7 elements. The number 5 counts weekdays only, while 6 and 8 do not represent the complete set of weekly day names, so option C is correct.

Related tags

SetsFinite SetCardinalityMathematicsClass 9General Chapter PracticeCommon QuestionsCommon

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