5
It is: 8+7+7+5+3+2+2 = 34/7 => 4 and 6/7 which is the average mean
5 2/5
{2, 2, 5, 6, 7} {2, 2, 5, 6, 7} {2, 2, 5, 6, 7} {2, 2, 5, 6, 7}
The average is 5.
5
5
It is: 8+7+7+5+3+2+2 = 34/7 => 4 and 6/7 which is the average mean
3+7+2+8+10 = 30 30 ÷ 5 = 6 Average = 6
5 2/5
{2, 2, 5, 6, 7} {2, 2, 5, 6, 7} {2, 2, 5, 6, 7} {2, 2, 5, 6, 7}
The answer is 6 / (1-5/7). 1- 5/7 = 2/7 6 / (2/7) = 6 * (7/2) = (6*7)/2 = 42/2 = 21. Simples!
The average is 5.
Guessing that is: 9 2/7 - 6 5/7 = (8 + 1 + 2/7) - 6 5/7 = (8 + 7/7 + 2/7) - 6 5/7 = 8 9/7 - 6 5/7 = 2 4/7 Alternatively, using improper fractions: 9 2/7 - 6 5/7 = (9x7+2)/7 - (6x7+5)/7 = 65/7 - 47/7 = 18/7 = (2x7+4)/7 = 2 4/7
Add them up: 8+7+7+5+3+2+2 = 34. There are 7 numbers, so divide by 7. 34/7 = 4 6/7
(6-2)*7 + 5 = 4*7 + 5 = 28 + 5 = 33
7