Practice RRB Group D Mathematics questions with answers and explanations.
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Mean=10.5.
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15+8=23.
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16×9=144.
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20+5=25.
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21×6=126.
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22/7=3.14.
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8+2=10.
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9×3=27.
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10/4=2.5.
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Increase/base×100=25%.
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Area=72 cm².
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Mean=10.0.
