Question

The sixth term of an AP is twice the 3rd term and the first term is 3 . Find the common difference and the 10th term

Answer 1

a+5d = 2(a+2d)
a+2d = 3
Now solve for a and d, then find a+9d

Answer 2

oops. That's a=3, not a+2d

Answer 3

Good