The marks obtained in a test by ^@ 42 ^@ students of a class are given below:
23, 28, 26, 28, 28, 23, 28, 32, 36, 42, 26, 38, 23, 32, 32, 38, 32, 28, 36, 26, 42, 38, 36, 26, 32, 23, 23, 36, 42, 23, 32, 26, 26, 32, 32, 38, 23, 28, 36, 28, 32, 28
Find the modal marks obtained by the students.