Answer :
According to the problem, there are 9 bassists out of 87.
To find the probability of randomly choose a bassist, we just have to divide.
[tex]P(\text{bassist)}=\frac{9}{87}[/tex]We divide these numbers because there are 9 bassists out of 87 musicians. Let's simplify the fraction.
[tex]P(\text{bassist)}=\frac{3}{29}[/tex]