Răspuns :
0,99 = 99/100
0,9999 = 9999/10000
99/100 { × 100 } [] 9999/10000
9900/10000 < 9999/10000
0,99 < 0,9999
0,9999 = 9999/10000
99/100 { × 100 } [] 9999/10000
9900/10000 < 9999/10000
0,99 < 0,9999