in a sports club with 30 members, 17 play badminton and 18 play tennis and 2 do not play either. how many members play both badminton and tennis?  Choose one
A) 7
B) 8
C) 9
D) 10
E) 11
<gadget id="calculator">17 + 18</gadget>
<output>35</output>

<gadget id="calculator">35 + 2</gadget>
<output>37</output>

<gadget id="calculator">37 - 30</gadget>
<output>7</output>

<result>A</result>
in a sports club with 30 members, 17 play badminton and 18 play tennis and 2 do not play either. how many members play both badminton and tennis?
subtract(add(add(17, 18), 2), 30)
"let x play both badminton and tennis so 17 - x play only badminton and 19 - x play only tennis . 2 play none and there are total 30 students . hence , ( 17 - x ) + ( 18 - x ) + x + 2 = 30 37 - 2 x + x = 30 37 - x = 30 x = 7 so 7 members play both badminton and tennis . a"