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Numbers

by rajan_agarwal » Mon Dec 07, 2015 3:06 am
Q. Sum of N natural numbers is S1, Sum of natural numbers upto 2N is S2, Sum of natur.{l numbers upto 3N is S3. Consider a as 1st term and d as common diference, Then find value of S3-S1-S2?

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by sanju09 » Fri Feb 05, 2016 12:25 am
rajan_agarwal wrote:Q. Sum of N natural numbers is S1, Sum of natural numbers upto 2N is S2, Sum of natur.{l numbers upto 3N is S3. Consider a as 1st term and d as common diference, Then find value of S3-S1-S2?
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by ceilidh.erickson » Fri Feb 05, 2016 10:00 am
The GMAT will never ask you a question about "natural numbers" or a "common difference." This is not a GMAT-like question at all.
Ceilidh Erickson
EdM in Mind, Brain, and Education
Harvard Graduate School of Education