I can probably drop two eggs two times.
Also I am sorry but I have no idea who you are, but welcome back!
number of different pairs the teacher can choose= nCr (18+14, 2)=496
no. of opposite gender pairs possible= 14 (since there are only 14 boys)
probability = 14/496= 7/248
I would say D. Fishing because of the ocean environment.
Self intrest and exchanging things for mutual benefit
