There are four classes 1, 2, 3, and 4 in the fifth grade of Yale School. It is known that the total number of students in this grade is 192. The average number of students in classes 1, 2, and 4 is 50, and the average number of students in classes 2, 3, and 4 is 48. , and Class 4 has 2 more people than Class 2. How many people are in the class with the smallest number of students in this grade.
雅乐学校五年级共有1、2、3、4四个班，已知该年级总人数为192，1、2、4班的平均人数为50人，2、3、4班的平均人数为48，并且4班比2班多2人．该年级人数最少的班上有多少人．
<gadget id="calculator">50 * 3</gadget>
<output>150</output>

<gadget id="calculator">192 - 150</gadget>
<output>42</output>

<result>42</result>