#### If the 8th term of an A.P. is zero, prove that its 38th term is triple of its 18th term.

**Solution:**

#### Which term of the A.P. 3, 10, 17,… will be 84 more than its 13th term?

**Solution:**

**More Solutions:**

- In an A.P. (with usual notations):
- The first term of an A.P. is 5, the last term is 45 and the sum is 400.
- How many terms of the A.P. 25, 22, 19, … are needed to give the sum 116
- Find the sum of first 22 terms, of an A.P. in which d = 7 and a22 is 149.
- If the sum of the first 6 terms of an A.P. is 36.
- If an = 3 – 4n, show that a1, a2, a3, … form an A.P.