9
A point
12,16,20,24,28,32,36,40,44,47
Mean = (27+27+29+32+35)/5 = 150/5 = 30 Median = 29 Difference = 1
27? unless you add 5 too. Then it would be 32. 7+9+11= 27 :)
The Geometric Mean of 12 and 27 is 18.0
The geometric mean of 3 and 27 is 9.0
It is sqrt(8) = 2.8284, approx.
The geometric mean of 18 and 27 is 22.045407685
GM(9, 27) = sqrt(9*27) = 15.5885 approx.
√27 x √48 = 5.19615242270663 x 6.92820323027551 = 36
9
30
What is the sum of the first 27 terms of the geometric sequence -3, 3, - 3, 3, . . . ?
A point
It is: (12+42)/2 = 27
187 days.