A class of 40 students participated in a survey on "Should supermarkets provide free plastic bags?" Each person made a choice among three options: "should provide", "should not provide" and "doesn't matter". May I ask: How many different possibilities are there for the statistics of the three options?
某班40名学生参加了一项关于"超市是否应该提供免费塑料袋"的调查，每人均在"应该提供"、"不应该提供"和"无所谓"三个选项中做出了选择．请问：三个选项的统计数字共有多少种不同的可能？
<gadget id="calculator">42 * 41</gadget>
<output>1_722</output>

<gadget id="calculator">1_722 / 2</gadget>
<output>861</output>

<result>861</result>