100petak
0, -10, -20

SOROZAT

r = {0, -10, -20}
S1 = S0 * (1+r)

r' = {0, -10, -20}
S2 = S1 * (1+r')

9 ertek
( 0,    0.0)  = 100 * 1 * 1       = 100
( 0,   -0.1)  = 100 * 1 * 0.9     = 90
( 0,   -0.2)  = 100 * 1 * 0.8     = 80
(-0.1,  0.0)  = 100 * 0.9 * 1     = 90
(-0.1, -0.1)  = 100 * 0.9 * 0.9   = 81
(-0.1, -0.2)  = 100 * 0.9 * 0.8   = 72
(-0.2,  0.0)  = 100 * 0.8 * 1     = 80
(-0.2, -0.1)  = 100 * 0.8 * 0.9   = 72
(-0.2, -0.2)  = 100 * 0.8 * 0.8   = 64

1/9⋅∑S2 -> ahol S2 az osszes

1/9 * (100 + 90 + 80 + 90 + 81 + 72 + 81 + 72 + 64) = 1/9 * 730 = ~81