23
4 digits
There are 4 digits in 1024
It is: 100,000,000,000,000
234, 243, 324, 342, 423, and 432.
4.1
It is 50,00,000.
4/100 or 0.04
It is 1,50,000.
6,00,000
17,00,000
7500000
6,70,000
940
175,000
The smallest that I can write is 4/89 = 4/134217728.I am guessing, though, that the answer that you want is 4/98.
4 72/100 or 4.72