SOLUTION: What are the last two digits of: 3^1994 7^1994 3^1994 + 7^1994 7^1994

SOLUTION: What are the last two digits of: 3^1994 7^1994 3^1994 + 7^1994 7^1994 - 3^1994

Question 753531: What are the last two digits of:
3^1994
7^1994
3^1994 + 7^1994
7^1994 - 3^1994
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!

For an integer ,
+ ... +
All the terms rxcept the last one are multiples of 100, so for some integer K, and ends in 01
ends in
so
=.......

+....+(+....+)+
with +....+
So =.......

So =.......

So =.......
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