Răspuns:
(1/10)³=1/1000
(1/2)³= 1/8
1/8*1/25= 1/200
1/1000+1/200⁵=1/1000+5/1000=²6/1000=3/500
1/1000 +1/8 x 1/25=1/1000+ 1/200=1/1000+ 5/1000 = 6/1000 = 3/500