what is the value of z? You will find that there are two answers for the last problem. Why is this so?

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2. If 31z5 is a multiple of 9, where z is a digit, what is the value of z? You will find that there are two answers for the last problem. Why is this so?
13
Oct
2. If 31z5 is a multiple of 9, where z is a digit, what is the value of z? You will find that there are two answers for the last problem. Why is this so? 2. If 31z5 is a multiple of 9 what is the value of z? You will find that there are [...]
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Tags: 2. If 31z5 is a multiple of 9 , what is the value of z? You will find that there are two answers for the last problem. Why is this so? , where z is a digit ,