The 19th term of an A.P.is equal to 3 times its 6th term. If its 9th term is 19, find the A.P.

The 19th term of an A.P.is equal to 3 times its 6th term. If its 9th t

1.	The 19th term of an A.P.is equal to 3 times its 6th term. If its 9th term is 19, find the A.P.
Answer» a19 =a +18d= 3(a+5d) a+18d=3a+15d 3d=2aa=3/2da+8d=193/2d+8d=193d+16d/2=1919d/2=19d=2a=19-8(2) = 3 3,5,7,9......... 3,5,7,9........