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.
Frequently asked questions
What is the correct answer to this question?
7
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Common Questions. Topic: General chapter practice.
