if the mean of 20, 14, 16 , 19 , p and 21 is 27 then find value of p.
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(20+14+16+19+p+21)/6=27
(90+p)/6=27
90+p=27*6
90+p=162
p=162-90
p=70
(90+p)/6=27
90+p=27*6
90+p=162
p=162-90
p=70
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