In a class every student can speak either English or Telugu. The number of students who can spea...

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In a class every student can speak either English or Telugu. The number of students who can speak only English, the number of students who can speak only Telugu and the number of students who can speak both English and Telugu are equal. Then which of the following can represent the number of students of the class?
(a) 20
(b) 25
(c) 45
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