A wire of length ^@ 6 \dfrac{ 1 } { 2 } \space m ^@ is broken into two pieces. If first piece is ^@ 4 \dfrac{ 5 } { 8 } \space m ^@ long, then the length of the second piece is:
There are 25 students in a class, out of which 14 are girls. If a teacher randomly picks a student, what is the probability that the student picked is a boy?