30 परिणामों का औसत 20 है तथा अ� – McqOptions

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1.	30 परिणामों का औसत 20 है तथा अन्य 20 परिणामों का औसत 30 है सभी परिणामों का औसत क्या हैं ?
A.	45
B.	12
C.	24
D.	76
Answer» D. 76

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