Răspuns:
a ) = (700+300) + (800+200) + (900+100) = 1000+1000+1000 = 3000
b) = (35+65) + (93+7) + (80+20) + (85+15) = 100+100+100+100 = 400
c) = 2*5 * 4*25 *6*9 = 10*100*54 = 1000*54 = 54 000
d) 50*20 *75*40 = 1000 * 3000 = 3000000
Bafta!