e 18th term, whichhe 6th term of an A.P. is 6 and 12th term is-12. Fin

1.	e 18th term, whichhe 6th term of an A.P. is 6 and 12th term is-12. Find thterm of the series is zéro?
Answer» a+5d= 6 ----(1)a+11d= -12 -----(2) and subtracting equation first from second, 6d = - 18=> d = -3 then a= 6-5d=6- 5(-3)=6 - (-15)a=6+15 = 21 18th term of AP is,a+17d= 21 + 17(-3)= 21 - 51= -30 Where is which term of the series is 0

e 18th term, whichhe 6th term of an A.P. is 6 and 12th term is-12. Find thterm of the series is zéro?

Answer»

a+5d= 6 ----(1)a+11d= -12 -----(2)

and subtracting equation first from second,

6d = - 18=> d = -3

then a= 6-5d=6- 5(-3)=6 - (-15)a=6+15 = 21

18th term of AP is,a+17d= 21 + 17(-3)= 21 - 51= -30

Where is which term of the series is 0