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To solve this problem

Time：10-13

CodePudding user response:

The answer is 120

CodePudding user response:

1/f, beginners reference side response:

answer is actually 120

Thank you for your big basking told the answer

CodePudding user response:

refer to the second floor weixin_46470997 response:

Quote: refer to 1st floor beginners side response:
answer is actually 120

Thank you for your big basking told the answer

This array is o the product of the first four (subscript starting from 0)