In a class, 6 students can speak Gujarati, 15 can speak Hindi and 6 can speak Marathi. If two students can speak two languages and one student can speak all the three languages, then how many students are there in the class Choose the correct choice from the following choices
A) 21	B) 22	C) 23	D) 24	E) 25
n(AU22UC)=6+15+6-2-2-2+1= 
<gadget id="calculator">6+15+6-2-2-2+1</gadget>
<output>22</output>
22   ANSWER:22
<result>B</result>
In a class, 6 students can speak Gujarati, 15 can speak Hindi and 6 can speak Marathi. If two students can speak two languages and one student can speak all the three languages, then how many students are there in the class