40n + 10n +29 </ 25653
50n +29 </ 25653
50n</ 25653 - 29
50n </ 25624
n </ 512,48
A ={ 0,1,2,3,.....512}
9n+1 </ 315 - 194-626 -192
9n + 1 </ -697
9n </ -697 -1
9n </ -698
n </ -77,(5)
n nu apartine N, asta daca ai scris corect multimea B
Deci B ={Q} multimea vida
A ∩ B = Q