दो संख्याओं A तथा B का औसत 20, B � – McqOptions

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1.	दो संख्याओं A तथा B का औसत 20, B तथा C का औसत 19 और C तथा A का औसत 21 है \| B का मान क्या है ?
A.	18
B.	19
C.	23
D.	45
Answer» B. 19

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