Question

खालीलपैकी कोणत्या समूहांना संच म्हणता येईल ते सांगा. / Tell which of the following collection of sets. i) आठवड्याचे वार / Days of week. ii) वर्गातील हुशार मुले / Clever students of class. iii) एका वर्षाचे महिने / Month in year. iv) गावातील आनंदी मुले / Happy children in the village. *​

Answer 1

The answer is "Days of the week"

Explanation for correct answer:

• For a collection to be called a set, it should be well defined.

• i) Days of week is a set because it is well defined, we know that there are 7 days in a week and every day has almost the same characteristics e.g. 24 hours, etc.

Explanation for incorrect answer:

• ii) Clever Students is not a set.

• Because the condition is not well defined. Cleverness is subjective. A person can get confused about whether a student is clever or not.

Explanation for incorrect answer:

• iii) Months of year is also not a set because each month has different characteristics.

• Some have 30 days, some have 31 days and February has either 28 or 29 days.

• Their spellings are different.

• So, the condition is not well defined.

Explanation for incorrect answer:

• iv) Happy children in the village is not a set.

• The reason is the same as a clever student.