pi day!

Geometry

100

What is the sum of all angles in a heptagon? 

900 degrees

200

What is the name of the second level of Geometry Dash?

Back on Track

300

A cube with side length of 8 has the same surface area as a rectangular prism with an side lengths of 4 and 4. What is the length of the rectangular prism's third side?

22

400

What's the unit circle coordinates of the HOUR HAND at 4:00 on an analog clock.

11π/6, so (√3/2, -1/2)

500

What is the rate of change (per minute) of the angle between the minute hand and the hour hand on a clock?

5.5 degrees per minute

Minute hand: moves 360 degrees in 60 minutes = 6 degrees per minute. Hour hand: 30 degrees in 60 minutes = 0.5 degrees per minute

6 - 0.5 = 5.5

Codes

100

9   12-9-11-5   16-9-5

^{I LIKE PIE!}

200

Solve the Ceaser Cypher with a shift of 7:

OHWWF JSBI KHF

HAPPY CLUB DAY!

300

Binary to base-10

Convert: 0110 1110

0 + 2 + 4 + 8 + 0 + 32 + 64 + 0 = 110

400

Solve: !)@$  ÷  @%^  +  @^#*%(^#$

1024 ÷ 256 = 4

4 + 263,859,634 = 263,859,638

500

 A + D + E + F = 11

G + K + N = 15

P + U + W + Z = 33

FIND: O + B + J

13

Algebra

100

Find x: 

21x² + 5x - 4

x = 1/3 or - 4/7

200

What number do you get when you multiply all the numbers of a telephone dialpad?

0. Zilch! Nil! 

300

Find x and y!

2x - 7y = 30

7x + 4y=18

x = 6

y = -6

400

Find the greatest common factor of 1350, 2025, and 3150.

225 

500

To make the most money, would you rather receive (a) $1.25 every second for 3 years or (b) $200 dollars per minute for 1 year? 

(no leap years) 

a: $118,260,000

b: $105,120,000

a is the answer!

Numerics

100

What is the only number written in alphabetical order?

fourty

200

Name the first 11 digits of pi.

3.1415926535

300

Write 1,424 in Roman numerals

MCDXXIV

400

Write down eight eights so that they add up to 1,000.

888 + 88 + 8 + 8 + 8 = 1,000

500

Sequences; Find x:

l6, 06, 68, 88, x, 98

(Bonus for 100: The answer creates a word)

87

Flip the sequence upside-down. 

Bonus: Late

Mystery

100

Three times what number is not larger than two times the same number?

any negative number

200

if February 1st is a Wednesday, what day of the week is April 25th?(non leap year)

Tuesday

300

Two dice are rolled. What is the probably that both dice show prime numbers?

9/36 or 25%

400

The equation for converting Fahrenheit to Calculus °F = °C × (9/5) + 32. At what temperature do the two scales equal each other?

-40^o

500

This mathematician is well-known for his logic behind believing in God.

(Hint: He has a really cool triangle)

Blaise Pascal