It is my favorite day of the year -

**National Pi Day**.

Everybody is getting in on the fun including

**Google **and

**QuickBase**.

**Today Is the 30th Anniversary of Pi Day**

*Here's What to Know About the Mathematical Holiday*http://time.com/5198663/google-doodle-pi-day-30-anniversary/To celebrate here is my QuickBase formula for ? from the 15th century (Nilakantha):

3 +

4 * (

1 / ( 2 * 3 * 4) -

1 / ( 4 * 5 * 6) +

1 / ( 6 * 7 * 8) -

1 / ( 8 * 9 * 10) +

1 / (10 * 11 * 12) -

1 / (12 * 13 * 14) +

1 / (14 * 15 * 16) -

1 / (16 * 17 * 18) +

1 / (18 * 19 * 20) -

1 / (20 * 21 * 22) +

1 / (22 * 23 * 24) -

1 / (24 * 25 * 26)

)

Which evaluates to : 3.1414796890043

Not too shabby and certainly beats memorizing all those digits.