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solmaris [256]
3 years ago
8

If the mean of a set of 12 number is 13 then the sum of the number is? ​

Mathematics
1 answer:
rjkz [21]3 years ago
5 0

Answer:

156

Step-by-step explanation:

Let the sum of the set of numbers  = S

So....the mean would be calculated as the sum of the set divided by its number of entries, or :

S / 12  = 13     ....... multiply both sides by 12

S  = 13 * 12   =  156  .....so.....the sum is 156

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What you need to know in order to answer this:

       In math, the symbol " ! " is used to indicate "factorial".
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