#### The sum of first n term of an A.P. is 3n² + 4n. Find the 25th term of this A.P.

**Solution:**

#### In an A.P., the sum of the first 10 terms is -150 and the sum of the next 10 terms is -550. Find A.P.

**Solution:**

**More Solutions:**

- The image of a point P under reflection in the x-axis is (5, -2).
- The point P (2, 3) is reflected in the line x = 4 to the point P.
- The point P (2, 4) on reflection in the line y = 1.
- The point P ( -4, -5) on reflection in y-axis is mapped on P.
- Find the coordinates of the image of (3, 1) under reflection.
- A Point P (a, b) is reflected in the x-axis to P’ (2, -3).