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If the mean of five observations x, x+2, x+4, x+6, x+8, is 11, then the mean of first three observations is(a) 9(b) 11(c) 13(d) none of these |
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Answer» If the mean of five observations x, x+2, x+4, x+6, x+8, is 11, then the mean of first three observations is (a) 9 (b) 11 (c) 13 (d) none of these |
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