📢 1800+ Railway Questions & RRB Study Material🚀
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In which year did Ole Romer measure the speed of light for the first time in the history?
1776
1676
1876
1867
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Venn Diagrams
Averages, Ratio and Proportion
Time And Work
Percentages
Profit And Loss
Number Series
Time Speed Distance
Inequalities
Remainders
Averages
Number Systems
Simple Interest Compound Interest
Functions, Graphs and Statistics
Geometry
Algebra
Linear Equations
Progressions and Series
Profit, Loss and Interest
Probability, Combinatorics
Data Sufficiency
Time, Distance and Work
Quadratic Equations
Logarithms
Coordinate Geometry
Logarithms, Surds and Indices
Averages Mixtures Alligations
Mensuration
Arithmetic
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