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Try doing 3 to some easy numbers and look for a pattern.

3^1 = 3

3^2 = 9

3^3 = 27

3^4 = 81

3^5 = 243

3^6 = 729

3^7 = 2187

3^8 = 6561

3^9 = 19683

Notice the pattern of last digits goes 3, 9, 7, 1 and repeats with a period of 4.

46 divided by 4 gives a remainder of 2 so the answer is the same as 3^2 which is 9.

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