# MENTAL maths

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 629998.  Mon Oct 26, 2009 7:08 pm 388 = ( Γ(Γ(4)) − 4! ) × 4 + 4 630000.  Mon Oct 26, 2009 7:09 pm 389 = ( Γ(Γ(4)) − 4! ) × 4 + 4 + Γ(√4) 389 = (4² + T(4))² + 4! + 4Last edited by Vera C on Thu Oct 29, 2009 7:20 am; edited 2 times in total 630749.  Thu Oct 29, 2009 2:37 am 390 = (4! x 4²) + 4 + √4 630750.  Thu Oct 29, 2009 2:53 am Vera C wrote: 389 = ( Γ(Γ(4)) − 4! ) × 4 + 4 + Γ(√4)

I know it seems unfair for me to point out a possible error when I haven't a clue how to correct it, but isn't that one digit 4 too many? 630785.  Thu Oct 29, 2009 7:11 am Yes, you're quite right. Thanks for pointing it out. I've changed it to something better. 391 = (4! x 4²) + 4 + T(4) 630960.  Thu Oct 29, 2009 7:03 pm 392 = 4! * 4^√4 + 4!! 632810.  Tue Nov 03, 2009 6:23 pm This is all perhaps getting a bit too easy. How about trying three 3s? http://z6.invisionfree.com/qigames/index.php?showtopic=6 762322.  Wed Nov 24, 2010 10:20 am Vera C wrote: Yes, you're quite right. Thanks for pointing it out. I've changed it to something better. 391 = (4! x 4²) + 4 + T(4)
To correct Vera: (4! x 4²) + 4 + T(4) = 398, not 391.

391 = T(T(gamma(4)))+sqrt(sqrt(sqrt(4^4!)))/.4
392 = 4*(4*4!+sqrt(4)) 763943.  Tue Nov 30, 2010 4:56 pm 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 4²) + 4 + T(4)
To correct Vera: (4! x 4²) + 4 + T(4) = 398, not 391.

391 = (4! x 4²) + Г(4) + Г(√4) 764270.  Wed Dec 01, 2010 11:20 pm That doesn't work - that includes 4 to the power 2 764275.  Thu Dec 02, 2010 1:46 am 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 764626.  Fri Dec 03, 2010 9:53 am 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. 765371.  Mon Dec 06, 2010 2:36 pm 394 = (4! x 4^(√4)) + T(4) 765472.  Tue Dec 07, 2010 3:08 am 395 = T(T(gamma(4))+gamma(4)) + T(gamma(4)) - 4 806619.  Sat Apr 16, 2011 4:59 pm 396= (4!)(4^2)+(4^2)-4 Page 3 of 4
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