Question

please help me to complete my file​

Answer 1

Answer:

the set theory - In naive set theory, a set is a collection of objects (called members or elements) that is regarded as being a single object. ... For example, any set is a subset of itself, and Ø is a subset of any set. If both A ⊆ B and B ⊆ A, then A and B have exactly the same members.

Step-by-step explanation:

2) Dr s Chandrasekhar -Subrahmanyan Chandrasekhar was born on October 19, 1910 in Lahore, British India. (Lahore is now in Pakistan.) He was the third of ten children in a well-educated family: his mother was a translator, who taught her children to read, while his father was Deputy Auditor General of the Northwestern Railways.

sorry I don't know more

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Answer 2

Answer:

mark as brainlist please mark