My Math Forum Obtain 64 with two 4s
 User Name Remember Me? Password

 Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion

 July 31st, 2017, 10:23 AM #1 Senior Member     Joined: Apr 2014 From: zagreb, croatia Posts: 234 Thanks: 33 Math Focus: philosophy/found of math, metamath, logic, set/category/order/number theory, algebra, topology Obtain 64 with two 4s This has been done before, but still it could be interesting. You can do anything, only out of all the numbers, you can use only 4, and only two times. Thanks from greg1313 and jks Last edited by skipjack; July 31st, 2017 at 10:29 AM.
 July 31st, 2017, 10:31 AM #2 Senior Member     Joined: Apr 2014 From: zagreb, croatia Posts: 234 Thanks: 33 Math Focus: philosophy/found of math, metamath, logic, set/category/order/number theory, algebra, topology I have no patience. $\displaystyle \sqrt{\sqrt{\sqrt{4^{4!}}}}$
 July 31st, 2017, 10:43 AM #3 Global Moderator   Joined: Dec 2006 Posts: 18,697 Thanks: 1525 Or $\sqrt{\sqrt{√4}}^{4!}$ and the like. Thanks from raul21
 July 31st, 2017, 11:42 AM #4 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 11,831 Thanks: 762 4!!^sqrt(4) = 64 Thanks from raul21
 July 31st, 2017, 11:46 AM #5 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 11,831 Thanks: 762 Using only one 4: ounces in 4 pounds = 64 Thanks from raul21
July 31st, 2017, 12:27 PM   #6
Math Team

Joined: Jul 2011
From: Texas

Posts: 2,722
Thanks: 1376

Quote:
 Originally Posted by Denis Using only one 4: ounces in 4 pounds = 64
using no 4's ...

individual squares on a checkerboard = 64

 July 31st, 2017, 03:07 PM #7 Senior Member     Joined: Jul 2012 From: DFW Area Posts: 614 Thanks: 83 Math Focus: Electrical Engineering Applications 4 << 4 (4 represented in binary, bit shifted left 4 times). Edit: Originally had 'binary 4' which I don't like. Thanks from raul21 Last edited by jks; July 31st, 2017 at 03:11 PM.
 August 25th, 2017, 07:04 PM #8 Senior Member   Joined: Jan 2014 From: The backwoods of Northern Ontario Posts: 371 Thanks: 68 4×(4 squared)
 August 26th, 2017, 09:00 AM #9 Math Team   Joined: Apr 2010 Posts: 2,778 Thanks: 361 Using three fours: 4 * 4 * 4 = 64
 August 26th, 2017, 09:12 AM #10 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 11,831 Thanks: 762 Hoempa, go stand in the corner for 64 minutes...

 Tags obtain

 Thread Tools Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post beesee Probability and Statistics 6 January 17th, 2015 10:28 AM aaron-math Complex Analysis 3 October 7th, 2013 10:33 AM hola hola Applied Math 1 September 12th, 2013 05:06 PM triplekite Algebra 10 December 27th, 2010 09:40 AM bluesilver Advanced Statistics 1 December 11th, 2006 02:08 PM

 Contact - Home - Forums - Cryptocurrency Forum - Top