If you mean: 2, 3 and 5 then they are 71, 73, 77 and 79
79 * 80 = 6,320
79/80 = 0.9875
80 is equal to 80 because it is the same number....... :)ex. (79=79) (100=100)
78 + 79 + 80 + 80 + 81 + 81 = 479
If you mean: 2, 3 and 5 then they are 71, 73, 77 and 79
79 * 80 = 6,320
80 is not divisible by 234569 but is divisible by 10.
79/80 = 0.9875
80
The answer is twenty but there are many more.
80 is equal to 80 because it is the same number....... :)ex. (79=79) (100=100)
If you mean: 4 and 79/80 then it is 4.9875
mn = 80 m -n = -79 Substitute m - 80/m = -79 m^2 - 80 = -79m m^2 + 79m = 80 (NB Notice change of signs) Quadratic Eq'n m = { - 79 +/- sqrt[)79)^2 - 4(1)(-80)}] / 2(1) m = { - 79 +/- sqrt[6241 + 320}]/ 2 m = { -79 +/- sqrt[6561]} / 2 m = { - 79 +/- 81}/2 m = -160 / 2 = -80 or m = 2/2 = 1 Hence n = 1 + 79 = 80
80
78 + 79 + 80 + 80 + 81 + 81 = 479
There are an infinite number of sets with mean 80. Here are some: {80, 80, 80}, {80, 80, 80, 80, 80, 80} {79, 80, 81}, {79, 79, 80, 81, 81}, {79, 79, 80, 82} (1, 80, 159}, {-40, 200} To produce a set of n numbers with mean 80, start with any set of n-1 numbers. Suppose their sum is S. Then add the number 80*n-S to the set. You will now have n numbers whose sum is S+80*n-S = 80*n So the mean of this set is 80.