How would you show that the product of all primes smaller than a given positive integer n is smaller than 5^n? - Quora
Why would anyone want to live on a Mars colony when the habitat would be so small, it would be like sentencing yourself to a tiny prison? - Quora
Is the mass of a black hole located in/at the event horizon, all at the singularity, or uniformly spread from the event horizon to the center? They still gravitate, so there must still be mass somewhere. - Quora