Question

The sum of 20 term of the following series is 2+3-6+2+3-6+2+3-6+....

Answer 1

Answer:

-1

Explanation:

2+3-6=-1

2+3-6 comes 6 times in the series of 20 and 2+3 comes at 19th and 20th position

Now 2+3-6 =-1 when multiplies by 6 gives -6 and when we add -6 to the 19th and 20th no. Of series we get -6+2+3=-1