Question

aflati suma nr naturale pare de forma abcde cu bara astfel in cat a+d=b+c=5,unde a,b,c,d cifre consecutive,iar e diferit de a,b,c,d.

Answer 1

a,b,c,d cifre consecutive atunci
b=a+1
c=a+2
d=a+3
a+d=5
a+a+3=5
a+a=2
a=1
atunci
b=2
c=3
d=4