cdma Posted June 1, 2005 Share Posted June 1, 2005 Arrange the numerals 1 2 3 4 5 6 7 8 and 9 to form a 9-digit nuber (ABCDEFGHI) whose 2-digit subsets meet the following criteria: AB is divisible by 2BC is divisible by 3CD is divisible by 4DE is divisible by 5EF is divisible by 6FG is divisible by 7GH is divisible by 8HI is divisible by 9 Give at least one of two possible solutions. Quote Link to comment
hoopburners Posted June 1, 2005 Share Posted June 1, 2005 Arrange the numerals 1 2 3 4 5 6 7 8 and 9 to form a 9-digit nuber (ABCDEFGHI) whose 2-digit subsets meet the following criteria: AB is divisible by 2BC is divisible by 3CD is divisible by 4DE is divisible by 5EF is divisible by 6FG is divisible by 7GH is divisible by 8HI is divisible by 9 Give at least one of two possible solutions.<{POST_SNAPBACK}> 7 8 1 2 5 4 9 6 3A B C D E F G H I AB = 78 / 2 = 39BC = 81 / 3 = 27CD = 12 / 4 = 3DE = 25 / 5 = 5EF = 54 / 6 = 9FG = 49 / 7 = 7GH = 96 / 8 = 12HI = 63 / 9 = 7 i started with letter E since the only number that would be divisible by 5 in the given numbers is 5. from there trial and error na lang po ako Quote Link to comment
cdma Posted June 1, 2005 Share Posted June 1, 2005 Ang Galing... Let the others find the other solution. Quote Link to comment
fastriser Posted June 6, 2005 Share Posted June 6, 2005 Kayo po bahala<{POST_SNAPBACK}> hi crystal , nasan ka na? Quote Link to comment
rakista_royale Posted June 7, 2005 Share Posted June 7, 2005 Hay.., Pasukan na nman, cguro marami magpapa-post ng math problems.., hehehehe... Quote Link to comment
gw@p1t0 Posted June 7, 2005 Share Posted June 7, 2005 hahahahhaha...malamang nga..... Quote Link to comment
rich beem Posted June 7, 2005 Share Posted June 7, 2005 hehehe... uu nga. ni minsan di pa ako gumamit ng differential equations sa PHP programming.<{POST_SNAPBACK}> mga bro...yung math naman ang ginagawa nya ay madevelope yung analytical thinking mo, maitaas yung paraaan mo ng pag iisip. habang pataas ng pataas at pahirap ng pahirap yung napag aaralan at natutuhan mong math dapat pagaling ka ng pagaling mag isip. try solving lagebra problem after you passed calculus sisiw di ba??? Quote Link to comment
bubuy Posted June 7, 2005 Share Posted June 7, 2005 7 8 1 2 5 4 9 6 3A B C D E F G H I AB = 78 / 2 = 39BC = 81 / 3 = 27CD = 12 / 4 = 3DE = 25 / 5 = 5EF = 54 / 6 = 9FG = 49 / 7 = 7GH = 96 / 8 = 12HI = 63 / 9 = 7 i started with letter E since the only number that would be divisible by 5 in the given numbers is 5. from there trial and error na lang po ako <{POST_SNAPBACK}>OT: ampf.. pre, di ko alam "clutch" time ka din sa math.. para di OT: can someone post the calculation of how to get the value of pi ( 3.14159.... ) alam ko calculus toh eh.. Quote Link to comment
hoopburners Posted June 7, 2005 Share Posted June 7, 2005 (edited) OT: ampf.. pre, di ko alam "clutch" time ka din sa math.. para di OT: can someone post the calculation of how to get the value of pi ( 3.14159.... ) alam ko calculus toh eh.. <{POST_SNAPBACK}> bosing, nakikisagot lang ako dito, hehehe. pampalipas din ng oras Edited June 7, 2005 by hoopburners Quote Link to comment
cdma Posted June 8, 2005 Share Posted June 8, 2005 OT: ampf.. pre, di ko alam "clutch" time ka din sa math.. para di OT: can someone post the calculation of how to get the value of pi ( 3.14159.... ) alam ko calculus toh eh.. <{POST_SNAPBACK}> Calculus is Greek to me. If I remember correctly though Pi can be calculated as accurately as desired using the series: Pi/4 = 1/1 - 1/3 + 1/5 - 1/7 + 1/9 - 1/11 + 1/13...... Pi has an infinite number of decimal places and computers have calculated Pi to 100 million decimal places. Quote Link to comment
lance1980 Posted June 11, 2005 Share Posted June 11, 2005 ILAN NGA BA TALAGA ANG BUTAS NG SKY FLAKES????<{POST_SNAPBACK}> 54 per cracker? <{POST_SNAPBACK}> ABA BINILANG NGA ! Quote Link to comment
omega_jef Posted June 11, 2005 Share Posted June 11, 2005 (a-x)^2 (b-x)^2 (c-x)^2 ..... (z-x)^2 = ??? la lang!!! baka kasi may sagot kayo. Quote Link to comment
hoopburners Posted June 13, 2005 Share Posted June 13, 2005 (a-x)^2 (b-x)^2 (c-x)^2 ..... (z-x)^2 = ??? la lang!!! baka kasi may sagot kayo.<{POST_SNAPBACK}> mukhang pareho rin ito nung unang na-post. (a-x)^2 (b-x)^2 (c-x)^2 ..... (z-x)^2 = 0 (x-x)^2=0. any number multiplied by 0 is 0. Quote Link to comment
bubuy Posted June 13, 2005 Share Posted June 13, 2005 mukhang pareho rin ito nung unang na-post. (a-x)^2 (b-x)^2 (c-x)^2 ..... (z-x)^2 = 0 (x-x)^2=0. any number multiplied by 0 is 0. <{POST_SNAPBACK}>naunahan mo ako ah.. galing talaga.. malamang wala ka na naman magawa jan.. Quote Link to comment
SanMigLight Posted June 14, 2005 Share Posted June 14, 2005 ewan ko sa inyo.. basta sakin pag math na usapan.problema ko talaga yan. hehehe Quote Link to comment
cdma Posted June 14, 2005 Share Posted June 14, 2005 Here's another Math lovers: In a finite set of integers from 1 to 50,000,000, the following six integers share two characteristics that no other integer in the set share: 1 36 1225 41616 1413721 48024900 What are those two characteristics? Quote Link to comment
omega_jef Posted June 15, 2005 Share Posted June 15, 2005 mukhang pareho rin ito nung unang na-post. (a-x)^2 (b-x)^2 (c-x)^2 ..... (z-x)^2 = 0 (x-x)^2=0. any number multiplied by 0 is 0. <{POST_SNAPBACK}> sorry redundant na pala hirap kasi magbasa pag maraming pages na... anyway, galing po!!! Quote Link to comment
hoopburners Posted June 15, 2005 Share Posted June 15, 2005 sorry redundant na pala hirap kasi magbasa pag maraming pages na... anyway, galing po!!!<{POST_SNAPBACK}>hey omega, that's okay. at least iba naman yung form eh but same solution din. Quote Link to comment
omega_jef Posted June 15, 2005 Share Posted June 15, 2005 thx ~_^ back tayo sa bagong problem, kinakalawang na talaga ako hanggang basic MATH lang ako wala kasing higher sa course ko. sana meron din dito mga circuit problem design/analysis or about pneumatics and hydraulics para may ma share ako. Here's another Math lovers:In a finite set of integers from 1 to 50,000,000, the following six integers share two characteristics that no other integer in the set share: 1 36 1225 41616 1413721 48024900What are those two characteristics?<{POST_SNAPBACK}> Quote Link to comment
shadowspy Posted June 26, 2005 Share Posted June 26, 2005 totoo ba ung sabi nun teacher ko sa Calculus nun high-school na 1+1=0? i mean binigay nya sa amin ung formula pero ndi ko matandaan eh...<{POST_SNAPBACK}> 1+1=0? ang alam ko sa binary system, 01+01=10, the last digits would make it seem that 1+1=0. Quote Link to comment
shadowspy Posted June 26, 2005 Share Posted June 26, 2005 anyone who has an idea on the factorial of -(1/2)? kung meron magaling dito sa green`s function, pwede magpaturo? pati na rin sa calculus of residues. thanks! Quote Link to comment
jonathan_tracer23 Posted July 9, 2005 Share Posted July 9, 2005 heres a simple math magic... if u wanna get the phone number of someone else with a beatiful effect.. try this math magic: 1. ask someone to put the first 3 digit of their phone nunber sa calculator.2. multiply by 80.3. add 1.4. multiply by 250.5. add the next 4 digit of their phone number.6. add it again.7. subtract 250.8. get the calculator from your victim, secretly divide the answer by 2.... POOOF!!! the total will be her/his phone number... meron ba magic forum sa mtc? let me know nman baka meron... ty!!! Quote Link to comment
cdma Posted July 13, 2005 Share Posted July 13, 2005 well they are each perfect squares:1^2, 6^2, 35^2, 204^2, 1189^2, and 6930^2 i suppose it is fair to assume that is the first characteristic. the numbers are also fairly distributed among the set.. which contain over 7000 perfect squares in all.. taking the successive differences of the set, we get:1, 5, 29, 169, 985, and 5741 because i'm such a nerd i know that these five numbers are pythagorean numbers with consecutive integers for legs:1^2 = 0^2 + 1^25^2 = 3^2 + 4^229^2 = 20^2 + 21^2169^2 = 119^2+ 120^2985^2 = 696^2 + 697^25741^2 = 4059^2 +4060^2 And so whatever the second property is it must be linked to that..<{POST_SNAPBACK}> The numbers in the series are PERFECT SQUARES and TRIANGLE NUMBERS as well. Going past the limit, the next number with the same two characteristics is 1631432881. :cool: Quote Link to comment
philos Posted July 17, 2005 Share Posted July 17, 2005 well they are each perfect squares:1^2, 6^2, 35^2, 204^2, 1189^2, and 6930^2 i suppose it is fair to assume that is the first characteristic. the numbers are also fairly distributed among the set.. which contain over 7000 perfect squares in all.. taking the successive differences of the set, we get:1, 5, 29, 169, 985, and 5741 because i'm such a nerd i know that these five numbers are pythagorean numbers with consecutive integers for legs:1^2 = 0^2 + 1^25^2 = 3^2 + 4^229^2 = 20^2 + 21^2169^2 = 119^2+ 120^2985^2 = 696^2 + 697^25741^2 = 4059^2 +4060^2 And so whatever the second property is it must be linked to that..<{POST_SNAPBACK}> I should give this one a try hehe Quote Link to comment
cdma Posted July 21, 2005 Share Posted July 21, 2005 Math for Fun: The great grand son of Einstein offered this proof that 1 = 2. He says: Assume a = b 1. multiply the equation by b ab = bb 2. subtract aa from equation ab - aa = bb - aa 3. factor difference of squares ab - aa = (b-a)(b+a) 4. factor left handside a(b-a) = (b-a)(b+a) 5. divide by common factor (b-a) a = b+a 6. substitute a for b (following assumption that a = a = a + a 7. simplify a = 2a 8. divide by common factor( a ) 1 = 2 "That was neat, but you did an illegal operation," said the great grand daughter of Da Vinci. What was theillegal operation? Quote Link to comment
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