Question 473930
Use Binomial Distribution
{{{P = nCx * p^x * (1-p)^(n-x)}}}
where n is total items, x is number of desired items, p is probability of selecting a desired item.
For this problem:
n = 3
x = 2
p = 7/11
{{{P = 3C2 * (7/11)^2 * (4/11)^1}}}
{{{P = 3*(49/121)*(4/11)}}}
{{{P = 0.44177}}}