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Which is greater, 13^89 or 14^87? Can you really guess the correct answer? No, it is difficult.
In competitive exams, simplifications play a vital role. Logarithm is the only solution in some scenarios to arrive at accurate values in the shortest possible time. Any other method consumes more time and the correct answer may not arrive.
In this book, we learn to calculate logarithmic and anti-logarithmic values without calculator, using a simple formula.
The formula is pretty simple, but one needs more and more practice of the complete book to achieve 99.9% accuracy. Having good command over multiplications becomes an added advantage.
This book helps only those who practice.
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