There are 165 people, of whom 98 can skate, 90 can swim, and 147 can play badminton, so at least how many people can do these three sports.
有165人，其中98人会滑冰，90人会游泳，147人会打羽毛球，那么至少有多少人这三样运动都会．
<gadget id="calculator">165 - 98</gadget>
<output>67</output>

<gadget id="calculator">165 - 90</gadget>
<output>75</output>

<gadget id="calculator">165 - 147</gadget>
<output>18</output>

<gadget id="calculator">67 + 75 + 18</gadget>
<output>160</output>

<gadget id="calculator">165 - 160</gadget>
<output>5</output>

<result>5</result>