Units Digit

[collegekid]

Find the units digit of the sum 8^48 + 4^96 + 7^411

I started out by finding the pattern.
8^48
8^1=8
8^2=64
8^3=512
8^4=4096
N^4=6

4^96
4^1=4
4^2=16
N^4=6

7^411
7^1=7
7^2=49
7^3=343
7^4=2401
=3

My Answer:The sums of the units digits equals 6+6+3=15
(I stated this as my answer, but my professor stated "yes, but this doesn't answer the question")

Can anyone help me figure out what she's asking? i thought she was asking for the sum of the units digits..

 

[Denis]

Find the units digit of the sum 8^48 + 4^96 + 7^411
My Answer:The sums of the units digits equals 6+6+3=15
(I stated this as my answer, but my professor stated "yes, but this doesn't answer the question")

"The units digit" of 15 is 5