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You are not logged in. #1 20121016 05:32:09
Sum of no.(1) The sum of all no. that can be formed by using the digits (2) Total no. of positive Integer solution of (3) Total no. of positive Integer solution of #2 20121016 05:47:48
Re: Sum of no.For (1): Must all the digits be used in making one number? The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment #3 20121016 05:52:04
Re: Sum of no.Q1. There are 7 digits. Pretend they are all different, a,b,c,d,e,f,g say. You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #4 20121016 05:56:43
Re: Sum of no.
We don't need the number of those kind of nos in tthe first problem. And in the second problem, the numbers an also take on a negative value... The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment #5 20121016 12:29:03
Re: Sum of no.Hi juan; 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. 