18 falls between 17 and 19.
18.
The number 19 it is between 18 and 20 and is a Prime Number.
There is Luke Hemmings who is 17 but turning 18 in July, Michael who is 18, Calum who is also 18, and the oldest Ashton who is 19 but will be turning 20 in July
19, 23 and 29
18.195, 18.3, 18.57936384648
27
18 falls between 17 and 19.
18.
They are 15, 16, 17, 18 & 19.
The number 19 it is between 18 and 20 and is a Prime Number.
The composite numbers between 11 and 19 are 12, 14, 15, 16 and 18
there are 1,140 seconds in 19 hours.
There are 60 seconds in a min. and 60 mins. in an hour = 3600 seconds in an hour. 19 seconds is therefore 19/3600 of and hour.
Anyone can marry at 18 but need parental consent if younger. At 18-19 you are an adult and can do as you wish.
It all depends on your age, an 18 year old tends to be faster than a 60 year old, it also varies with sex, as Males tend to be faster than Females. Averages are always hard to base upon due to various factors; age, sex, mobility, weight, height etc. with the below results being best estimates Male averages: Under 11 - 19 seconds 11-15 - 17 seconds 16-19 - 16 seconds 20-28 - 15 seconds 29-40 - 16 seconds 41-60 - 17 seconds 60+ - 18 seconds Female averages: Under 11 - 21 seconds 11-15 - 19 seconds 16-19 - 17 seconds 20-28 - 16 seconds 29-40 - 17 seconds 41-60 - 18 seconds 60+ - 22 seconds These are based on the average person who does not do much exercise and of course people who do regular exercise, running, cycling, walking, swimming etc being slightly quicker.
There is Luke Hemmings who is 17 but turning 18 in July, Michael who is 18, Calum who is also 18, and the oldest Ashton who is 19 but will be turning 20 in July