There are 12 people in Group 2 of Class 1, Grade 4, 5 of whom can play table tennis, 8 can play chess, and 3 can play both table tennis and chess, so this group can neither play table tennis nor How many people play chess?
四年级一班第2小组共12人，其中5人会打乒乓球，8人会下象棋，3人既会打乒乓球又会下象棋，那么这个小组中既不会打乒乓球又不会下象棋的有多少人．
<gadget id="calculator">8 - 3</gadget>
<output>5</output>

<gadget id="calculator">5 + 5</gadget>
<output>10</output>

<gadget id="calculator">12 - 10</gadget>
<output>2</output>

<result>2</result>