JEE Main BArch Mathematics problem 1143: Find the arithmetic mean of 6 and 12.
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(6+12)/2=9.0.
Practice BArch Mathematics questions with answers and explanations.
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(6+12)/2=9.0.
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Increase/base ×100 = 25%.
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The units digit follows from 6³.
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Area=15×7=105.
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Area=3×9=27.
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By Vieta, root sum is the coefficient 16.
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(5+15)/2=10.0.
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Increase/base ×100 = 25%.
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The units digit follows from 8³.
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8²+5²=89.
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Area=9×8=72.
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By Vieta, root sum is the coefficient 21.