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Mathematics, 26.03.2021 14:00 raven681

Please I need help with this ASAP. A Chef thought of a very challenging formula for a combination of codes for his locker. He can use n numbers to set the code to his locker. He wants to hide all his recipes in it. He wants to know how many codes he can make so that he can change the password to his locker every week. He came up with the following formula but he forgot how to simplify it.
2nC1 + 2nC2 + 2nC3 + ... 2nCn + ... 2nC2n
Simplify this formula for him to tell him the number of combinations he can use in terms of n.

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