What is the units digit of 33^2 * 17^3 * 39^2?	Pick:
A) 1 B) 3 C) 5 D) 7 E) 9
The units digit of 33^2 is the units digit of   3*3= 
<gadget id="calculator">  3*3</gadget>
<output>9</output>
9 which is 9.   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 39^2 is the units digit of   9*9= 
<gadget id="calculator">  9*9</gadget>
<output>81</output>
81 which is 1.   The units digit of  9*3*1= 
<gadget id="calculator"> 9*3*1</gadget>
<output>27</output>
27 is 7.   The answer is 7.
<result>D</result>
What is the units digit of 33^2 * 17^3 * 39^2?