Question 1188839
both oranges is (20/30)(19/29)=380/870=38/87=0.4368
both non-organic is (22/30)(21/29)=462/870=0.5310
probability that both oranges and non-organic:  it is (15/30)(14/19))=210/570=7/19=0.3684
It is the sum of the first two minus the third, which deals with double counting: 0.5994