Question

what is the sum (-3)+(+3)+(-3)+(+3)+(-3)+(-3)+________ equal to, if the number terms is 51

Answer 1

The answer is given below :

The correct series is

(-3) + (+3) + (-3) + (+3) + ...

We need to find the sum of the series upto 51 terms.

We see that,
(2n)th term + (2n - 1)th term = 0,
where n is any Natural number.

So, upto 50 terms, the sum be zero (0).

The 51st term is = (-3).

Hence, the sum of the series is
= 0 + (-3)

= (-3)

Thank you for your question.