Sir/MadamThis is the format of 4 numbers in AP as (a-3d),(a-d),(a+d),(a+3d) is given in the book.I want to know “How this AP formed”.Please explain this concept .Thanks & RegardsMonika
Sir/Madam
This is the format of 4 numbers in AP as (a-3d),(a-d),(a+d),(a+3d) is given in the book.
I want to know “How this AP formed”.Please explain this concept .
Thanks & Regards
Monika