Problem 1. Thực hiện các phép tính sau theo modulo tương ứng: (a) 12 + 35.89 + 78.92 (mod 5) (b) 17.43 + (−3).72 (mod 7) (c) 36.43 + 54.972 (mod 7) (d) 123.357.14 − 13.7 (mod 6) (e) 45.982 − (−17).20 + 341 (mod 19) (f) 56.16 + 17.243 (mod 16) (g) 67.32 + 34.944 (mod 31) (h) 786.123 + 73.49 (mod 12)

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