1.
The exponents follow a pattern, with every other digit being a one:
3^2 = 9
3^4 = 81
3^6 = 729
3^8 = 651
3^10 = 59049
3^12 = 531441
etc.
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That means multiply it by 2. If your tens digit is 3, your ones digit is 6.
The quotient is a repeating series of the digits 428571 . . . a pattern of six digits.16 repetitions of the pattern = 96 digits, ready to start the pattern again.The 100th digit is the 4th digit after 96, which is the 4th digit of the pattern ===> 5
3
216.
3