With the sick children who stayed home, there are this many kindergarten students in the class: 24 - 2 = <<24-2=22>>22 kids.
This many jellybeans are eaten: 22 x 3 = <<22*3=66>>66 jellybeans.
This many jellybeans are still left in the jar: 100 - 66 = <<100-66=34>>34 jellybeans.
#### 34