I used to be an A student in math but now I'm all rusty. Can anybody help me solve this problem?! ABCD*4=DCBA Thanks!!!
2006-10-19 05:23:11 · 6 answers · asked by snak3s2001 3 in Science & Mathematics ➔ Mathematics
The answer is here:
http://www.gomath.com/Questions/question.php?question=23022
And the specific answer is 2178 x 4 = 8712.
2006-10-19 05:35:13 · answer #1 · answered by HopeURSatisfiedW/MyAnswers 3 · 0⤊ 0⤋
Looks like an obvious INequality to me, unless the ABCD is somehow different than DCBA.............
2006-10-19 12:28:12 · answer #2 · answered by Steve 7 · 0⤊ 0⤋
What do ABCD represent? They could be Matricies in which case AD does equal DA
2006-10-19 12:43:03 · answer #3 · answered by Anonymous · 0⤊ 0⤋
what he means by ABCD is 1000A + 100B + 10C + D
and DCBA is 1000D + 100C + 10B + A
2006-10-19 12:30:40 · answer #4 · answered by BEN 2 · 0⤊ 0⤋
If A, B, C and D represent number symbols, as someone suggested, then I suggest trial and error ;)
If they are numbers, than one of them must be 0.
2006-10-19 12:35:32 · answer #5 · answered by kheserthorpe 7 · 0⤊ 0⤋
(1000a+100b+10c+d)*4=1000d+100c+10b+a
3999a+390b-60c-996d=0
you know that a, b, c & d are integers. From here all I could do is trial & error.
2006-10-19 15:28:04 · answer #6 · answered by yupchagee 7 · 0⤊ 0⤋