The admission fee at a zoo is $2 for children and $4 for adults. if 1800 people enter the zoo and $6000 is collected, how many adults went to the zoo? a) 300 b) 600 c) 1200 d) 1500

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?