Some Javascript homework related to iteration statement and common knowledge of function

1. Write a Javascript function which will show the sum of the following series-

        a) 1 + 2 + 3 +…………………………………….+ 100 = ?

        b) 2 + 4 + 6 +.....................................................+ 100 = ?

        c) 1 + 3 + 5 +.......................................................+ 100 = ?

2. Write a javascript function which will show the product of the following series-

        a) 1 * 2  * 3  *……………………………………. * 10= ?

        b) 2  * 4  * 6  *..................................................... * 10 = ?

        c) 1  * 3  * 5  *....................................................... * 9 = ?

3. Write a javascript function which will take first number & last number of a series from user using prompt() function or two text boxes whose general difference is 1 and show the sum of the series.

4. Write a javascript function which will take the the base and height of a triangle from user and show the area of the triangle.

5. Area of a square.

6. Area of a circle.