Q:
# Why is March 14, 2015 important?

**As of 2014, the significance of March 14, 2015 is that when it is written out as 3/14/15, it represents the first five digits of pi, which is 3.1415.** At 9:26:53, the written numbers are the first 10 digits of pi, which is 3.141592653. This sequence occurs once every century.

Credit:
bortonia
Digital Vision Vectors
Getty Images

A non-binding resolution was passed by the U.S. House of Representatives in 2009 to make March 14 National Pi Day. Common ways to celebrate include eating and throwing pie. Some schools have pi memorization contests. As of 2014, the most places of pi memorized is 67,890; this record is held by Chao Lu of China.

Learn more about Arithmetic-
Q:
## What is the divisibility rule for the number 8?

A: A number is divisible by 8 if the last three digits are divisible by 8. For instance, the number 1192 is divisible by 8 because its last three digits, in o... Full Answer >Filed Under: -
Q:
## What is expanded form in mathematics?

A: In mathematics, expanded form is a method of representing a number through an addition statement by totaling the values of its digits. For example, the num... Full Answer >Filed Under: -
Q:
## What is the divisibility rule for 9?

A: A number is divisible by 9 if and only if the sum of its digits is divisible by 9. If a number is divisible by 9, it is also divisible by 3 because 9 is a ... Full Answer >Filed Under: -
Q:
## How many combinations of numbers can be made from four digits from 0000 to 9999?

A: 10,000 numbers can be made from combinations of four digits from 0 to 9. The formula for counting the number of combinations is 10^4, or 10 x 10 x 10 x 10. Full Answer >Filed Under: