a There are 50 numbers. Each number...
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a There are 50 numbers. Each number is Bubtracted from 53 and the mean of the numbers so obtained is 3.5. The mear the given numbers is :

Railway Exams
Maths
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begin{tabular}{l|l} ( x_{1} ) & New ( x_{2} ) & ( x_{1}^{prime}=53-x_{1} ) ( x_{2}^{prime}=53-x_{2} ) end{tabular} ( x_{50} ) ( x_{50}=53-x_{50} ) ( x_{1}^{prime}+x_{2}^{prime}+x_{50}^{prime}=53 times 50-left[x_{1}+cdots cdot x_{50}right] ) Given ( frac{53 times 50-left[x_{1}+x_{2} cdot+x_{5} 0right]}{50}=-3.5 ) ( Rightarrow quad 53-frac{left[x_{1}+x_{2} cdot cdots+x_{50}right]}{50}=-3 cdot 5 ) ( Rightarrow frac{[x(+x)+x 50]}{50}=56 cdot 5 ) ams
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