- Find a four-digit number ABCD such that ABCD14 is twice as big as 14ABCD, where A, B, C and D each represent a unique digit.
- The Indian Mathematician Ramanujan knew that there were four different whole numbers A, B, C and D such that:
A3 + B3 = 1729 and C3 + D3 = 1729
What is the sum A + B + C + D?
2006-09-30 08:46:51 · 3 answers · asked by chicagoboy 2 in Education & Reference ➔ Homework Help
Two separate problems people!!
2006-09-30 08:47:21 · update #1
I just don't know where to start homies!
2006-09-30 08:54:32 · update #2
A hint for the first one: Look at a period of the decimal
expansion of 1/7. Write that as a whole number,
then double it.
For the second 1729 = 12^3 + 1^3 = 10^3 + 9^3.
The sum of 12, 1, 10, and 9 is 32.
2006-09-30 09:20:29 · answer #1 · answered by steiner1745 7 · 0⤊ 0⤋
What specifically do you need help with? Show what you think the work is and answer is. That way, others can see where you need help. Otherwise, this is just having someone else do your homework.
2006-09-30 08:49:35 · answer #2 · answered by Anonymous · 0⤊ 0⤋
working on it, i'll edit it when i get something
which might take a while...
2006-09-30 09:06:21 · answer #3 · answered by Vanna 2 · 0⤊ 0⤋