1 intre si 11/47 = 58/47
29/52 < (1/47 +1/48+1/49 +.......+1/104) < 58/47
nr termeni 104-47+1=58
(1/47 +1/48+1/49 +.......+1/104)>1/104+1/104+....+1/104>58/104>29/52
⇒S >29/52
(1/47 +1/48+1/49 +.......+1/104)<1/47+1/147+....+1/47<58/47<1 intreg 11/47
⇒S < 1 intreg si 11/47