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Find the unit digit of (33)^(123) |
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Answer» Solution :SINCE we KNOW that the unit digit of `(33)^123` will be same as `(3)^123`. Now the unit-digit of `3^123` will be 7 since will be equal to the unit digit of `(3)^3`. Thus the unit digit of `(3)^123` is 7. |
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