The first term of an A.P. is -7 and the common difference is 5. Find it's 18th term and general term. Also say what is general term of an A.P. Please answer very fast. As you can. It's very urgent. Please don't share any links. Share with your friends Share 0 Shruti Tyagi answered this Dear student, first term a= -7common difference d=5then general term an=a+(n-1)d⇒ an=-7+(n-1)5⇒ an=-7+5n-5⇒ an=-12+5nand 18 th term a18=-7+(18-1)5⇒a18=-7+17×5⇒a18=-7+85⇒a18=72 The general term is the formula that is used to calculate any number in an arithmetic sequence.it is given by an=a+(n-1)d Regards 0 View Full Answer
