What is the units digit of 63^3 * 17^3 * 49^3?
Choose the correct choice from the following:
A) 1
B) 3
C) 5
D) 7
E) 9
The units digit of 63^3 is the units digit of   3*3*3= 
<gadget id="calculator">  3*3*3</gadget>
<output>27</output>
27 which is 7.   The units digit of 17^3 is the units digit of   7*7*7= 
<gadget id="calculator">  7*7*7</gadget>
<output>343</output>
343 which is 3.   The units digit of 49^3 is the units digit of   9*9*9= 
<gadget id="calculator">  9*9*9</gadget>
<output>729</output>
729 which is 9.   The units digit of  7*3*9= 
<gadget id="calculator"> 7*3*9</gadget>
<output>189</output>
189 is 9.   The answer is 9.
<result>E</result>
What is the units digit of 63^3 * 17^3 * 49^3?