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If the mean of a,b,c,d is K, then what is the mean of a) a+b,2b,c+b, d+b |
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Answer» Answer: mean of a, B, c, d=(a+b+c+d)/4=K mean of a+b,2b,c+b,d+b =(a+b+2b+c+b+d+b)/4 =(a+b+c+d+4b)/4 =(a+b+c+d)/4. + 4b/4 =K+b |
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