They are all positive numbers.
You can select 12 numbers for the first digit, 11 numbers for the second digit, and 10 numbers for the third digit; so 12*11*10 = 1320 sets of 3 numbers can be made out of 12 different numbers.
3+7=10 10+2=12 12*2=24
(10, 12, 12, 13, 13)
(6 + 12 + 10 + 4 + 3) ÷ 5 = 7 Therefore, 7 is the average of the five numbers given in the question.
The numbers divisible by both 3 and 4 are multiples of 12, thus between 10 and 99: 12, 24, 36, 48, 60, 72, 84, 96 are the numbers divisible by both 3 and 4.
Prime numbers from 1 to 12: 2, 3, 5, 7, 11Composite numbers from 1 to 12: 4, 6, 8, 9. 10. 12
8. The easiest explanation is that there are 9 numbers. The median will be the number in the middle, so there will be 4 numbers on either side of it. Keep in mind that this only works once the numbers are arranged from smallest to largest (it would not work if the numbers were arranged like this: 12 8 10 8 10 5 3 5 3)
Composite numbers in the list: 4, 6, 8, 9. 10. 12 Prime numbers in the list: 2, 3, 5, 7, 11
3 x 3 = 9 2 x 5 = 10 2 x 2 x 3 = 12
8mean = (9+3+8+10+12+6)/6= 48/6= 8
By dividing all numbers by 10 it is: 12 3 1
36