THE
NATURAL

CALCULATOR

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CONTENTS

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Introduction

1   ON THE FLAG

Practice Exercises

2   PROPORTIONATELY

Practice Exercises

3   BY ONE MORE THAN THE ONE BEFORE

Practice Exercises

4   THE FIRST BY THE FIRST AND
     THE LAST BY THE LAST

Practice Exercises

The following chapter is not complete

5   ALL FROM 9 AND THE LAST FROM 10

Practice Exercises

The following chapter is not complete

6   VERTICALLY AND CROSSWISE

Practice Exercises

 

ALGEBRAIC PROOFS

REFERENCES