13 because it is a 2-digit number?
or because the third # in the set of odds (1,3,5,7,9...) would be 11, not 13...
~Im a secret
Chat with our AI personalities
It could be 2 because the rest are odd number It could be 9 because the rest are prime numbers
13 & 7/9
The mean is found by adding the values together and dividing by the number of values. 5+7+9+11+13+9 = 54 54 divided by 6 is 9. The mean of 5, 7, 9, 11, 13, 9 is 9.
15
13