Which functional group is found in an ester? A central carbon is double bonded to O above, and single bonded to R below left and right.
A central carbon is double bonded to O above, and single bonded to R below left and to O R prime below right.
R single bond O H.
R single bond N H 2.

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?