Sorry teachers my app was bugging and the answer seemed not answered and closed.

Dear student
Your question is not clear and appears to be incomplete. Recheck your question or please be a
little specific about the name of the chapter/textbook to which you are referring here so that we
can provide you with some meaningful help.
Look forward to hearing from you again!
Kindly post the query again with the attachment of your question.
We will surely help you out with the same.
Regards

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