I think it is: The factory in which the grinding takes place.
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 believe the answer is d.
Air pollution permits, for sure, you don't have to pay for air polution to drive a truck, so why when you build and office.
nakalimutan mo po i post ang tanong plese post the question para maansetan na min