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You are not logged in. #1 20130619 12:15:58
Glamor Geometric SeriesIntegers a, b, c, d and e satisfy 50<a<b<c<d<e<500, and a,b,c,d,e form a geometric sequence. What is the sum of all possible distinct values of a? 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #2 20130619 13:53:49
Re: Glamor Geometric SeriesHi; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #3 20130619 15:01:14
Re: Glamor Geometric SeriesThat seems to be correct! 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #4 20130619 15:56:52
Re: Glamor Geometric Series[removed by administrator] In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #5 20130619 17:59:47
Re: Glamor Geometric Serieshi You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #6 20130619 22:12:45
Re: Glamor Geometric SeriesHelp! I did not understand anything at all 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #7 20130619 22:25:45
Re: Glamor Geometric SeriesHi; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #9 20130619 22:54:17
Re: Glamor Geometric SeriesYep and please explain it. I don't understand it at all 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #10 20130619 23:09:18
Re: Glamor Geometric Serieshi Agnishom, You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #11 20130620 00:59:24
Re: Glamor Geometric SeriesJust passed like a tangent over my tiny brain. After my examination stress is reduced, I'll trying reading that again 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #12 20130620 01:03:58
Re: Glamor Geometric SeriesDid you try programming it? In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #13 20130620 01:42:46
Re: Glamor Geometric SeriesNo. 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #15 20130620 01:51:02
Re: Glamor Geometric Seriesa min = 51. #16 20130620 01:56:52
Re: Glamor Geometric SeriesThere is one more. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #17 20130620 01:57:50
Re: Glamor Geometric SeriesSo 500 = 50x^6 => 10 = x^6 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #18 20130620 02:42:38
Re: Glamor Geometric Serieshi Agnishom, You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #19 20130620 12:55:36
Re: Glamor Geometric Series
Why and How? 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #20 20130620 15:08:26
Re: Glamor Geometric Seriesa has to be divisible by 16 so that it could cancel with 16 in the denominator. #21 20130620 17:16:34
Re: Glamor Geometric Serieshi Agnishom, Similarly and finally so we have c = 180. This is divisible by 4 and b = 120. This is divisible by 8 and a = 80. This is divisible by 16 Try out some other numbers and you'll begin to see why it has to be 16. (and for r = 1 and a third a has to be divisible by 3 x 3 x 3 x 3 .) Bob You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #22 20130703 02:47:14
Re: Glamor Geometric SeriesThe Featured Solution: https://brilliant.org/i/b6ozMJ/ 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #23 20130703 02:59:37
Re: Glamor Geometric SeriesYes, if you are signed in as a member. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #24 20130703 03:10:27
Re: Glamor Geometric SeriesNew Problem There are 5 kinds of dishes i, ii, iii, iv, and v. Four Customers A, B, C and D choose a dish at random. What is the probability that person D chooses a previously unordered dish? 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #25 20130703 03:16:58
Re: Glamor Geometric SeriesAlthough I have the exact answer by experimental methods I am still working on a good solid method that would please an olympic dude. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. 