13 is prime.
78
mean average = sum of dataset / number of items in dataset = (14 + 18 + 13 + 15) / 4 = 60/4 = 15
It will not.
These numbers divide into 15 evenly: 1 3 5 and 15.
Any number not in the 13 times table. E.g 14, 15, 16,... but not 26.
15 is the highest number 15 can be divided by evenly.
It can not be divided by anything and come out as an evenly. only numbers for example like 0 6 15 21 and 18 if they were divided by three would be able to ccome out evenly.
13
13 is spelled as thirteen.14 is spelled as fourteen.Did you mean the number 1314? This would be spelled as one thousand, three hundred and fourteen.
14, which is the middle number when they are listed in order.
3 and 5 are prime numbers but if you mean 13 14 15 18 then it is 13