Question: Need help solving this counting problem from Discrete math A ternary string is a string made from the alphabet _ = 1 0, 1, 2

Need help solving this counting problem from Discrete math

A ternary string is a string made from the alphabet _ = 1 0, 1, 2 Count the number of ternary strings given the following conditions Note: WeBWork allows you to enter in the formula to compute the answer, a. How many ternary strings of length 6 are there? 729 b. How many ternary strings of length 6 start and stop with the same character c. How many ternary strings of length less than 3 are there? Note: Don't forget to count the empty string, A. with zero characters

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