The fifth grade students participate in community service activities. The number is between 40 and 50. If they are divided into groups of 3, 4 or 6, and there is exactly one missing member, how many fifth graders will participate in the activity?
五年级同学参加社区服务活动，人数在40和50之间，如果分成3人一组，4人一组或6人一组都正好缺一人，五年级参加活动的一共有多少人？
<gadget id="calculator">2 * 2 * 3</gadget>
<output>12</output>

<gadget id="calculator">12 * 4</gadget>
<output>48</output>

<gadget id="calculator">48 - 1</gadget>
<output>47</output>

<result>47</result>