Practice india-recruitment-upsc-cds questions with answers and explanations.
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Area=57 cm².
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Mean=12.0.
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21+5=26.
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Increase/base×100=25%.
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Area=216 cm².
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Mean=9.0.
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9+2=11.
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10×3=30.
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11/4=2.75.
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Increase/base×100=25%.
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Area=78 cm².
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Mean=10.5.
