I.15 Number of 50th decimal place

When you calculate 6/7 (6 divided by 7), what is the number of 50th decimal place?





Answer
5

Solution
6/7 = 0.857141857 ・・・・・.   
857141 becomes a recurring decimal used as one cycle. 
It is set to 50/6 = 8 remainder 2. 
Remainder 2 indicates that the number of 50th decimal places is the 2nd number of this cycle which is 5.