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
(6 + 12 + 10 + 4 + 3) ÷ 5 = 7 Therefore, 7 is the average of the five numbers given in the question.
(10, 12, 12, 13, 13)
Rectangular numbers, also known as oblong numbers, are the products of two consecutive integers. Between 3 and 10, the rectangular numbers are 6 (2×3), 12 (3×4), and 20 (4×5). Thus, the rectangular numbers in that range are 6 and 12.
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.
To find the mean of the numbers 8, 12, and 10, add them together: 8 + 12 + 10 = 30. Then, divide the sum by the number of values, which is 3: 30 ÷ 3 = 10. Therefore, the mean of 8, 12, and 10 is 10.
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