Mr Cameron places the names of his students in a hat order to randomly call on students. There are 12 girls and 10 boys in the class what is the probability that a boy will be called on?

A. 1/22
B. 5/11
C. 1/10
D. 5/6

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

d. you cannot tell because there are no values shown.