In a games hour 4 different types of players came to the ground? cricket 11, hockey 15, football 21, softball 15. In these 4 people play both cricket and hockey, 3people play both softball and football. 6 people play both cricket and football. How many people play only cricket?  Choose the correct choice.
A) 11 B) 1 C) 5 D) 3 E) 9
people play only cricket = total players in cricket- both cricket and football- both cricket and hockey.   people play only cricket = 11-4-6= 
<gadget id="calculator">11-4-6</gadget>
<output>1</output>
1   Answer is 1
<result>B</result>
In a games hour 4 different types of players came to the ground? cricket 11, hockey 15, football 21, softball 15. In these 4 people play both cricket and hockey, 3people play both softball and football. 6 people play both cricket and football. How many people play only cricket?