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wu :: forums    riddles    easy (Moderators: ThudnBlunder, william wu, towr, Grimbal, SMQ, Icarus, Eigenray)    24? I cant get 24 with 7,7,3,3 « Previous topic | Next topic » Pages: 1  Reply Notify of replies Send Topic Print    Author  Topic: 24? I cant get 24 with 7,7,3,3  (Read 1282 times) Oros24 Newbie     Posts: 1 24? I cant get 24 with 7,7,3,3   « on: Apr 28th, 2003, 10:44pm » Quote Modify Can someone please tell me how I am suppose to get 24, using 7, 7, 3 and 3 once each.     Thanx! IP Logged towr wu::riddles Moderator Uberpuzzler Some people are average, some are just mean.     Gender: Posts: 13730 Re: 24? I cant get 24 with 7,7,3,3   « Reply #1 on: Apr 28th, 2003, 11:24pm » Quote Modify how about (3+3/7)*7 = 21+3 = 24 I think it's allready at the site somewhere, cause I don't usually know the answer IP Logged Wikipedia, Google, Mathworld, Integer sequence DB josh k. Guest Re: 24? I cant get 24 with 7,7,3,3   « Reply #2 on: May 2nd, 2003, 12:49pm » Quote Modify Remove on Apr 28th, 2003, 10:44pm, Oros24 wrote: Can someone please tell me how I am suppose to get 24, using 7, 7, 3 and 3 once each.     Thanx! You could 7 x 3= 21 + 3 = 24 IP Logged LZJ Junior Member     Gender: Posts: 82 Re: 24? I cant get 24 with 7,7,3,3   « Reply #3 on: May 2nd, 2003, 6:05pm » Quote Modify You must use all 4 numbers once, and once only. IP Logged Al Moreno Guest Re: 24? I cant get 24 with 7,7,3,3   « Reply #4 on: May 13th, 2003, 12:11pm » Quote Modify Remove How about: [color=Black][/color](7*3)+3!-3=24. IP Logged Al_Moreno Newbie     Posts: 2 Re: 24? I cant get 24 with 7,7,3,3   « Reply #5 on: May 13th, 2003, 12:19pm » Quote Modify Oops! I guess I'm not using all the numbers only once...   IP Logged Al_Moreno Newbie     Posts: 2 Re: 24? I cant get 24 with 7,7,3,3   « Reply #6 on: May 13th, 2003, 2:10pm » Quote Modify Okay.  How's This?   (sqrt(7 * 7 ) – sqrt( 3 * 3 ))! = 4! = 24 IP Logged towr wu::riddles Moderator Uberpuzzler Some people are average, some are just mean.     Gender: Posts: 13730 Re: 24? I cant get 24 with 7,7,3,3   « Reply #7 on: May 13th, 2003, 11:54pm » Quote Modify Usually you're only allowed to use +, -, * and  / So no sqrt, ^ or ! and such IP Logged Wikipedia, Google, Mathworld, Integer sequence DB HiFermat Guest Re: 24? I cant get 24 with 7,7,3,3   « Reply #8 on: Mar 25th, 2004, 2:01am » Quote Modify Remove (3 + 3/7 )*7 = ( 24/7 )*7 =24 IP Logged Benoit_Mandelbrot Junior Member Almost doesn't count.     Gender: Posts: 133 Re: 24? I cant get 24 with 7,7,3,3   « Reply #9 on: Mar 25th, 2004, 9:10am » Quote Modify Since that one is solved, see if there is a way to get 2, 3, and 4 into 42 using any method.  You can use only 2, 3, and 4. IP Logged Because of modulo, different bases, and significant digits, all numbers equal each other! Sameer Uberpuzzler Pie = pi * e     Gender: Posts: 1261 Re: 24? I cant get 24 with 7,7,3,3   « Reply #10 on: Mar 25th, 2004, 10:06am » Quote Modify Hmm is it :: ceil(log10((32*4)!)) :: « Last Edit: Mar 25th, 2004, 10:08am by Sameer » IP Logged "Obvious" is the most dangerous word in mathematics. --Bell, Eric Temple Proof is an idol before which the mathematician tortures himself. Sir Arthur Eddington, quoted in Bridges to Infinity Sir Col Uberpuzzler impudens simia et macrologus profundus fabulae     Gender: Posts: 1825 Re: 24? I cant get 24 with 7,7,3,3   « Reply #11 on: Mar 25th, 2004, 11:45am » Quote Modify A slightly easier solution would be, 2*4!–3!, but I thought these problems are supposed to be solved with the basic arithmetic operations? IP Logged mathschallenge.net / projecteuler.net Benoit_Mandelbrot Junior Member Almost doesn't count.     Gender: Posts: 133 Re: 24? I cant get 24 with 7,7,3,3   « Reply #12 on: Mar 25th, 2004, 12:44pm » Quote Modify Here is another one for you::[int]24(x[sup3]-x-x-x)dx=42. :: IP Logged Because of modulo, different bases, and significant digits, all numbers equal each other! Perfection Newbie     Gender: Posts: 17 Re: 24? I cant get 24 with 7,7,3,3   « Reply #13 on: Mar 29th, 2004, 8:21pm » Quote Modify I like this one the best   (3+2-4)(logxx+logxx+logxx+logxx+logxx+logxx+logxx+lo gxx+ logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+lo gxx+ logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+logxx+lo gxx) « Last Edit: Mar 29th, 2004, 8:24pm by Perfection » IP Logged Pages: 1  Reply Notify of replies Send Topic Print Forum Jump: ----------------------------- riddles -----------------------------=> easy   - medium   - hard   - what am i   - what happened   - microsoft   - cs   - putnam exam (pure math)   - suggestions, help, and FAQ   - general problem-solving / chatting / whatever ----------------------------- general -----------------------------  - guestbook   - truth   - complex analysis   - wanted   - psychology   - chinese « Previous topic | Next topic »

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