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Which machine part is used to reduce friction between hubs and axles of ceiling fans and in bicycles ?
Ball bearings
Springs
Nuts
Bolts
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Number Series
Algebra
Data Sufficiency
Number Systems
Functions, Graphs and Statistics
Linear Equations
Time, Distance and Work
Mensuration
Averages, Ratio and Proportion
Progressions and Series
Geometry
Averages Mixtures Alligations
Quadratic Equations
Logarithms, Surds and Indices
Logarithms
Time And Work
Percentages
Probability, Combinatorics
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Inequalities
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Coordinate Geometry
Profit And Loss
Time Speed Distance
Simple Interest Compound Interest
Averages
Arithmetic
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