EXERCISES.

1.--The Ratio of the Circumference of the circle to its diameter is

expressed by the integer 3 and 708 decimals, of which I give only eight.

Learning these nine figures is good practice in numeric

thinking--3.14159265.

2.--The Yellowstone National Park contains 2,294,740 acres.

3.--The Monster Chartist Petition contained 3,317,702 names.

Assimilative Memory; or, How to Attend and Never Forget · 第 36 / 158 题