On the Richter scale, which measures the total amount of energy released during an earthquake, a reading of x-1 indicates one-tenth the released energy as is indicated by a reading of x. On that scale, the frequency corresponding to a reading of 9 is how many times as great as the frequency corresponding to a reading of 3?  Choices:	A) 40	B) 50	C) 10^4	D) 10^5	E) 10^6
If Richter scale reading goes from X-1 to X it will be 10   if Richter scale reading goes from 3 to 4 it will be 10   if Richter scale reading goes from 4 to 5 it will be 10   if Richter scale reading goes from 5 to 6 it will be 10   Similarly if Richter scale reading goes from 6 to 7 it will be 10   and if Richter scale reading goes from 7 to 8 it will be 10   and if Richter scale reading goes from 8 to 9 it will be 10   so it will from 3 to 9 i.e 4,5,6,7,8,9 = 10*10*10*10*10*10 = 10^6   Answer is 10^6
<result>E</result>
On the Richter scale, which measures the total amount of energy released during an earthquake, a reading of x-1 indicates one-tenth the released energy as is indicated by a reading of x. On that scale, the frequency corresponding to a reading of 9 is how many times as great as the frequency corresponding to a reading of 3?