perplexus.info :: Numbers : An Odd Pyramid

An Odd Pyramid (Posted on 2003-10-14)

Consider the numerical pyramid below, formed by simply putting down the series of odd numbers into a pyramid.

           1
         3   5
       7   9   11
    13  15  17   19
      . . .

Find a formula for the sum of the numbers in the nth row, and prove it.

See The Solution Submitted by DJ

Rating: 4.1667 (12 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

u dont need a hammer to crack a nut

| Comment 9 of 21 |

i think we can solve this problem using a simple formula for sum of numbers from 1 to n ... dont think u need to use calculus ..i have posted the above solution.

Posted by anand on 2003-10-16 04:56:04

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