20 संख्याओ का औसत 12 है । जिसमे प्रथम 12 संख्याओ का औसत 11 तथा अन्य 7 संख्याओ का औसत 10 हो तो अंतिम संख्या ज्ञात करे:A. 40B. 38C. 48D. 50

20 संख्याओ का औसत 12 है । जिसम�

1.	20 संख्याओ का औसत 12 है । जिसमे प्रथम 12 संख्याओ का औसत 11 तथा अन्य 7 संख्याओ का औसत 10 हो तो अंतिम संख्या ज्ञात करे:A. 40B. 38C. 48D. 50
Answer» Correct Answer - B Let the last no =x According to question 12 x 11 +7 x 10 +x = 20 x 12 132+70+x=240 x=240-202 x=38

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20 संख्याओ का औसत 12 है । जिसमे प्रथम 12 संख्याओ का औसत 11 तथा अन्य 7 संख्याओ का औसत 10 हो तो अंतिम संख्या ज्ञात करे:A. 40B. 38C. 48D. 50

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