Out of 30 class 9 students, some students have participated in one or both of the sports, tennis and table tennis. The diagram below represents some information about number of participants. What would come in the place of 'x' if it is known that 10 students of the class didn't participate in any of the two sports?
A. 8 B. 10
C. 18 D. (We cannot say anything based on the given information.)
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total students =30
10 students don't participated so now number of students =20
now 5+x+7=20 therefore x=8
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