UPSC 2013 CDS 2 Math Paper
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Question : 98 of 100
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If m is the mean of p, q, r, s, t, u, v, then what is ( p – m ) + ( q – m ) + ( r – m ) + ( s – m ) + ( t – m ) + ( u – m ) + ( v – m ) equal to?
[2013 CDS-II]
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