In the decimal expansion of (9/10)^4 what is the fourth digit to the right of the decimal point?  Choose the most appropriate option:  A) 2  B) 7  C) 1  D) 0  E) 5
Step 1 1onvert fraction to decimal with two decimal places 9/10= 
<gadget id="calculator">9/10</gadget>
<output>9/10 = around 0.9</output>
0.90 then convert to scientific number= 9*10^-1   Step 2 Multiply 9^4 by 10^-4   Step 3 9 has the sequence 9, 81, 729   Answer is 1
<result>C</result>
In the decimal expansion of (9/10)^4 what is the fourth digit to the right of the decimal point?