If the 2nd term of an A.P is 8 and 5th term is 17 find its 1th term

1.	If the 2nd term of an A.P is 8 and 5th term is 17 find its 1th term
Answer» Second term (a2) = 8fifth term (a5) = 17we know that general formula of a term in ap is a+(n-1)d\xa0therefore, a2=a+d 8=a+da5=a+4d 17=a+4dsolving the two equations simultaneously....we get....d=3{tex}\\therefore{/tex}\xa0a=5 (a= First term) your answer is 5

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