Pi number
STEM
Probability and Patterns
Geometry
Algebra
100

What is the value of PI correct to five decimal places?

3.14159

100

Which numbers are used in binary code to run computers?

0 and 1

100

What is the letter that every odd number has?

“E” 

100

What is the sum of the interior angles of a triangle?

180 degrees

100

What is the only even prime number?

2

200

On which date is Pi day celebrated?

14th of March

200

Which type of numbers are used in RSA encryption to protect passwords?

Prime numbers

200

What is the missing number in the sequence: 1, 1, 2, 3, 5, ?, 13?

8

200

How many sides does a hexagon have?

6

200

A farmer has 17 sheep. All but 9 run away. How many are left?

9

300

What is the formula to calculate the Pi?

Circumference/diameter

300

If a virus spreads by doubling every day and fills a bottle on the 30th day, when was it half full?

On the 29th day!

300

How many cuts are needed to a cake and get 8 pieces?

3

300

What is the name of a quadrilateral with only one pair of parallel sides?

Trapezoid

300

Which number doesn’t have symbol in Romanian?

0

400

Is PI a rational or irrational number?

Irrational

400

Which pH value represents a neutral substance like pure water?

7

400

How likely is it that at least two people share the same birthday in a room of 23 people?

50%

400

If you keep adding sides to a polygon infinitely, what shape does it start to resemble?

Circle

400

Which number is often considered "unlucky" in some cultures?

13

500

Who is born in the Pi day?

Albert Einstein

500

If the Sun disappeared right now, how long would it take for Earth to notice?

About 8 minutes

500

How likely is it to be struck by lightning in one year?

Around 1 in 500,000 to 1 in a million (depending on location)

500

Which shape is considered the strongest and is commonly used in bridge design?

Triangle 

500

The next perfect number after 6?

6=1+2+3

6=1*2*3

28