Common Interview Questions / Sandeep / All http://commoninterview.com The source for Job Interview Questions and Job Search Networking Fri, 02 Jul 2010 19:28:09 -0600 en <![CDATA[Can you estimate or calculate value of 2 power 64?]]> http://commoninterview.com/Programming_Interview_Questions/can-you-estimate-or-calculate-value-of-2-power-64/ http://commoninterview.com/Programming_Interview_Questions/can-you-estimate-or-calculate-value-of-2-power-64/ Fri, 02 Jul 2010 19:28:09 -0600 Sandeep Programming Interview Questions http://commoninterview.com/Programming_Interview_Questions/can-you-estimate-or-calculate-value-of-2-power-64/ I was recently asked this question on interview for Web Developer position.


I am very bad with calculations on the white board, so knowing that 2^8=256, I comeout with following estimation:


2 power 64 interview question


The actual result is quite different,  1.84467441 × 1019


 


While interviewer said this approach would work for him, I wonder if there is better way to estimate 2^64 without a lot of calculations.



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