The Art of Mathematics: Learn the Quickest, Trickiest and Conceptual way of doing it; specially for IAS CSAT, BANK PO/CLERK, SSC, RAILWAY, LIC ETC --- "Math Dikhta Hai"
Data Interpretation-16 (Double Pie Diagram): Shortcut Tricks: By Amar Sir
Without changing the ratio, the values can be changed, especially in the case of 'Ratio' and 'Percentage' - This is very important concept and without this concept, you can't solve this type of DI in the given time frame. Watch the video: https://youtu.be/U86X0GT3jhw
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