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20 संख्याओ का औसत 15 है। यदी प्रथम 5 संख्याओ का औसत 12 हो तो अन्य संख्याओ का औसत ज्ञात करे ?A. 16B. 15C. 14D. 13

Answer» Correct Answer - A
According to the question
Average of 20 numbers is = 15
sum of 20 numbers is =15 x 20 =300
Average of first five numbers is = 12
sum of first five number is = 12 x 5 =60
`therefore` Sum of remaining numbers =300-60=240
Average of remaining =`240/15=16`


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