Tower of Nine
by luimichael, Apr 6, 2017, 12:32 PM
Find the last two digits of 
and 
.
Remark
In view of the above proof, we see that the last two digits of the tower of 9 (to any order > 2) will be 89
and 
.
-
by binomial expansion.
.
for some positive integer k.
.
.
for some positive integer s.
Remark
In view of the above proof, we see that the last two digits of the tower of 9 (to any order > 2) will be 89
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