PERFORMANCE TASK
Tell whether each of the following sets is well-defined or not.
1. The set of happy people.
2. The set of all factors of 24.
3. The set of letters in the word "HOPE". 4. The set of even counting numbers less than 20.
5. Set of all admiring students.
Give the cardinality of the following sets.
1.The set of even counting numbers from 1 to 25.
2. The set of letters in the word "crisis"
3. D = {1, 2, 3, 4,5)
4. A = {p,1,e,a,s,e)
5. The elements of set B ={days in a week)
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