the thirteenth term of an ap is two times its tenth term and the third term is 6 more than two times its sixth term. find A.P
Answers
Answered by
11
Answer:18,15,12.......
Step-by-step explanation:
a 13 =a+12d=2×a10
a+12d=2(a+9d)
-a-6d=0.........(1)
a3= a+2d= 2(a+5d)+6
-a-8d=6..........(2)
By(1)-(2):
-2d=6
d= -3
a= 18
A.P: 18,15,12.....
Similar questions