Problem 1174. Wheat on a chessboard pt 2

Created by Robert Turner

Solve Later

<div style = "text-align: start; line-height: 20.4333px; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: rgb(0, 0, 0); white-space: normal; "><div style="block-size: 93px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 46.5px; transform-origin: 407px 46.5px; vertical-align: baseline; "><div style="block-size: 63px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 31.5px; text-align: left; transform-origin: 384px 31.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; "><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 384px 8px; transform-origin: 384px 8px; unicode-bidi: normal; "><span style="">If a chessboard were to have wheat placed upon each square such that x grains were placed on the first square and each successive square after had y times the amount of grains as the square before. How many grains of wheat would be on the chessboard at the finish?</span></span></div><div style="block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; "><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 136px 8px; transform-origin: 136px 8px; unicode-bidi: normal; "><span style="">Assume the chess board is n by n squares.</span></span></div></div></div>

Solve

Solution Stats

273 Solutions
72 Solvers

Last Solution submitted on Apr 21, 2021

Last 200 Solutions

Problem Comments

4 Comments

4 Comments

Show 1 older comment

David on 7 Jan 2013

consider using isequalwithequalnans (isequaln) against NaN instead of isequal against 'NaN' in test 7.

Jean-Marie Sainthillier on 12 Mar 2013

n=-1 ???

Asif Newaz on 12 Jan 2020

how to place negative amount of 'wheat' on a chessboard?
the prob is gd but the test suites are unnecessarily jumbled up.

Dyuman Joshi on 10 Apr 2021 at 10:41

Removed the cases with negative quantities. Everyone should be able to solve the problem now.

Solution Comments

Solution 186218

1 Comment

1 Comment

Robert Turner on 4 Jan 2013

This should also be slimmed down somehow.

Solution 186217

1 Comment

1 Comment

Robert Turner on 4 Jan 2013

Someone can easily beat this lead.

Problem Recent Solvers72

Problem Tags

chess exponential wheat word problems

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 1174. Wheat on a chessboard pt 2

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers72

Suggested Problems

More from this Author4

Problem Tags

Community Treasure Hunt

Problem 1174. Wheat on a chessboard pt 2

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers72

Suggested Problems

More from this Author4

Problem Tags

Community Treasure Hunt

Players