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In questions 86 and 87
I thought that order does not matter but it sounds like it does from the formula they used in the solution
Could you explain how do we know if the order matters or not (especially for these two questions because they made me confused)
Thanks
I thought that order does not matter but it sounds like it does from the formula they used in the solution
Could you explain how do we know if the order matters or not (especially for these two questions because they made me confused)
Thanks