1.

यदि 7,5,13,x, तथा 9 का औसत 10 हो, तो x का मान क्या होगा ?A. 10B. 12C. 14D. 16

Answer» Correct Answer - D
Arithmetic mean
=`("Total sum")/("Total number")`
According to the question ,
`10=(7+5+13+x+9)/5`
50=x+34
x=50-34
x=16


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