# CBSE Class 10-Mathematics: Chapter –5 Arithmetic Progressions Part 16

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**Question 11:**

Determine the AP whose third term is and the term exceeds the term by .

**Answer:**

Put the valve of d in eq. (i)

**Question 12:**

Find the sum of AP in

**Answer:**

**Question 13:**

In an AP, find and a.

**Answer:**

**Question 14:**

Find for the AP in

**Answer:**

**Question 15:**

Find the sum to n term of the AP in 5, 2, -1, -4, -7……….

**Answer:**