Find the remainder when $787^{777}$ is divided by $100$?
MyApproach
$787^{20\times38+17}$=$787^{17}$=I will get the last digit of remainder as 7 but how to calculate tens digit in this question fast using this approach only.
Similarly,Find the remainder when $948^{728}$ is divided by $100$.
On solving I get $948^8$=I will get the last digit of remainder as 7 but how to calculate tens digit in this question fast using this approach only.
Again here how to calculate the other digits fast.
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