Please help me to understand this.
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Last edited by chetanojha on Sun May 03, 2009 2:46 am, edited 1 time in total.
Answer is C coz if u take only 1 then u don't have info about the other set.
and this is same for the statement 2 alone.
but if u take both the statements then u can calculate all the members of both the sets and then can identify whether the SD of one set is greater than the other set.
hence C.
