Question

Determinati nr prime a b c cu proprietatea ca a + 2b + 3c = 33 

Answer 1

a+2b+3c=33
=> a<33
     b<33/2 => b<17
     c<33/3 => c<11

Numere prime strict mai mic decat 33: {2,3,5,7,11,13,17,19,23,29,31}
Verifici conditiile.Din cele 3 conditii=>
2+2*5+3*7=2+10+21=33; {2,5,7}

Answer 2

ax1+2bx1+3cx1=33
nr prime =2,3,5,7,11,13..,17,
17+2x5+3x2=33 
a=17 
b=5
 c=2