Question

Pleaseeeee!!!Din tot sufletul meu

Answer 1

abcd + dcba = 5764
a si d nu pot fi 0
1000a + 100b + 10c + d + 1000d + 100c + 10b + a = 5764
1001a + 110b + 110c + 1001d = 5764
1001(a + d) + 110(b + c) = 5764
a = d   si   b = c 
cazul 1
a = d = 1     
1001(1 + 1) + 110(b + c) = 5764
2002 + 110(b + c) = 5764
110(b + c) = 5764 - 2002
b + c = 3762/110 = 34,2            NU
Cazul 2
a = d = 2
1001(2 + 2) + 110(b + c) = 5764
4004 + 110(b + c) = 5764
110(b + c) = 5764 - 4004
b + c = 1760/110 = 16
b = c   =>  b = c = 16/2 = 8

abcd = 2882
dcba = 2882