The units digit of (35)^(87) + (93)^(46) is:
Select the correct option:
A) 2	B) 4	C) 6	D) 8	E) 0
Step 1: (35)^(87) can be broken up into (5)^87 x (7)^87. Each power of 7 ends in a units digit of either a 7,9,3 or 1. Each power of 5 ends in a 5. When you multiply 5 by any odd number you will end up with a units digit of 5.   Step 2: (93)^(46) can be broken up into (3)^46 x (31)^46. Each power of 31 ends in a units digit of 1. Each power of 3 ends in a units digit of either 3,9,7 and 1. Since there is a pattern here where every 4th power of 3 ends in a units digit of 3, the 46th power of 3 would end in a units digit of 9. When you multiply 1 by 9 you end up with a units digit of 9.   Therefore, the units digit we are looking for is 5 + 9= 
<gadget id="calculator">5 + 9</gadget>
<output>14</output>
14. Units digit will be 4. Answer 4.
<result>B</result>
The units digit of (35)^(87) + (93)^(46) is: