14 terms

What is the probability that 2 fair coins flipped will give at least 1 coin landing heads, considering that the 2 are independent?

...

If sin θ = √3/4, then what is cos θ?

...

If α times α - 1 equals 1, then what is α?

...

What is 27₁₀ converted with a base of 8?

...

What is e^(πi)?

...

If a number has an odd number of factors, what does that mean?

...

If I have 3 cookies 🍪and 9 friends😃, then how many ways are there to distribute each of my friends to the 3 cookies such that each cookie has at least one person at it? (Note: the cookies are indistinguishable and so are my friends?

7

What is the sum of the solutions of the equation | x - 6 | = 21?

12

What is 2+1?

4

What is φ(100)?

40

Prove Riemann's hypothesis:

Haha. Pretty much impossible. But if you do, there is a 1 million dollar cash prize!

If the circumference of a circle 21, then what the length of the minor arc formed by an inscribed angle of 30°?

7/2

Give one property of the Archimedes Polyhedron:

Answers may vary, but the most common: each vertex is equidistant from the center.

How many pythagorean triples are there such that

...