The $7^{ ext {th }}$ term from the end of the A.P. : $-8,-5,-2, \ldots$, 49 is :\

Question

The $7^{	ext {th }}$ term from the end of the A.P. : $-8,-5,-2, \ldots$, 49 is :\

Professor PC Thomas Classes · Answer

(c):First term, $a=-8$\ common difference, $d=3$\ Last term (l) = 49\ $n^{	ext {th }}$ term from the end $=I-(n-1) d$\ $7^{	ext {th }}$ term from the end $=49-(7-1) 	imes 3=31$\