First and second place in the contest use a ratio to share a cash prize when first place pays $100 second please pay $60 how muc
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Notice that
so that for each power of 2, there is a pattern of period 4. This means that for integers
, each of 
, 
, 
, and 
have the same units digit.
We can write
, and since 
, it follows that 
and 
share the same units digits. So the units digit of 
is 8.
so that for each power of 2, there is a pattern of period 4. This means that for integers
We can write