B1: Tìm STN `n ( n>0)` sao cho 1! + 2! + 3! +…+n! là một SCP. B2: Tìm STN `n` để `2^8 + 2^11 + 2^n` là SCP.

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B1: Tìm STN `n ( n>0)` sao cho 1! + 2! + 3! +…+n! là một SCP.
B2: Tìm STN `n` để `2^8 + 2^11 + 2^n` là SCP.

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