The first five multiples of 12 are 12, 24, 36, 48, and 60 respectively. An average is calculated by dividing the sum of the values by the number of values.
Therefore, the average of the first five multiples of the number 12 can be computed in the following manner:-
Average of first 5 multiples of 12 = 12 + 24 + 36 + 48 + 60 / 5 = 180 / 5 = 36.