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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 9: Tìm số dư khi chia 7^10202 cho 12

Toán Lớp 9: Tìm số dư khi chia 7^10202 cho 12

Comments ( 1 )

  1. Ta có : 7^10202 =(7^2 )^5101 =49^5101
    Vì 49≡1(mod 12 )=>49^5101 ≡1^5101 =1(mod 12)
    =>7^10202 ≡1(mod12)
    Vậy 7^10202 chia $12$ dư $1$

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222-9+11+12:2*14+14 = ? ( )