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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Harini
the correct option is A the standard relation between mean, median and mode is Mean = 1/2*(3median - mode) median = 1/3 mode + 2/3 mean ------ (1) mode = 3 median - 2 mean ----------(2) median - mode = 1/3 mode + 2/3 mean - 3 median + 2 mean substitute (1) in RHS median - mode = 1/3 mode + 2/3 mean - mode - 2 mean + 2 mean median - mode = 2/3 mean - 2/3 mode = 2/3( mean - mode)