All the students in the sixth grade should be photographed according to their personal certificates. They are arranged in a row according to the order of the class and numbered. The first student in Class 2 of the sixth year is No. 46, and the last student is No. 94. How many students are there in Class 2, Grade 6?
六年级全体同学要照个人证件相，他们按班别顺序排成一列，并编上了号码．六年2班排第一位的同学是46号，排最后的同学是94号．六年2班共有多少位同学．
<gadget id="calculator">94 - 46</gadget>
<output>48</output>

<gadget id="calculator">48 + 1</gadget>
<output>49</output>

<result>49</result>