View previous topic | View next topic

MENTAL maths

Page 4 of 4
Goto page Previous  1, 2, 3, 4

Vera C
763943.  Tue Nov 30, 2010 4:56 pm Reply with quote

WordLover wrote:
Vera C wrote:
Yes, you're quite right. Thanks for pointing it out. I've changed it to something better.

391 = (4! x 4) + 4 + T(4)
To correct Vera: (4! x 4) + 4 + T(4) = 398, not 391.

Oops. How about

391 = (4! x 4) + Г(4) + Г(√4)

 
bobwilson
764270.  Wed Dec 01, 2010 11:20 pm Reply with quote

That doesn't work - that includes 4 to the power 2

 
aTao
764275.  Thu Dec 02, 2010 1:46 am Reply with quote

Quote:
Use the digit 4, up to four times to make 1,2,3 etc
Using: + , , , - , √ , ( ) , ( )^2 and ! (as many times as necessary)


4 to the power 2 = (4)^2

 
WordLover
764626.  Fri Dec 03, 2010 9:53 am Reply with quote

Quote:
Use the digit 4, up to four times to make 1,2,3 etc
Using: + , , , - , √ , ( ) , ( )^2 and ! (as many times as necessary)

and T(), phi() and gamma(). I think that that makes the problem too easy, though it's still rather a challenge if you limit yourself to 3 4s.

392 (see above)
393 = (gamma(4)+4^4)/sqrt(:4)

where by :4 I mean .4 recurring.

 
Vera C
765371.  Mon Dec 06, 2010 2:36 pm Reply with quote

394 = (4! x 4^(√4)) + T(4)

 
WordLover
765472.  Tue Dec 07, 2010 3:08 am Reply with quote

395 = T(T(gamma(4))+gamma(4)) + T(gamma(4)) - 4

 
joefoxon1
806619.  Sat Apr 16, 2011 4:59 pm Reply with quote

396= (4!)(4^2)+(4^2)-4

 

Page 4 of 4
Goto page Previous  1, 2, 3, 4

All times are GMT - 5 Hours


Display posts from previous:   

Search Search Forums

Powered by phpBB © 2001, 2002 phpBB Group