Generally for such if nothing mentioned we take natural numbers (because there isn’t a first even integer…goes from – infinity to + infinity) Reply

In Q3 Shouldn’t the answer be 3775?

Yes indeed, a typo ðŸ™‚ I’ll correct it soon.

regards

J

Sir in the 4th question why didn’t we took “a” as zero?

also in the last question did we work on the second level series i.e 12,20,28 with d=8?

Could but that would be lengthy. Just used summation formula for squares…

Generally for such if nothing mentioned we take natural numbers (because there isn’t a first even integer…goes from – infinity to + infinity)