#21 - The equation is unsolvable. Much to the chagrin of the Australian Air Force that put it out.

#12 the micro SD is either 64000 MB or 61035 MB depending on whether you are using decimal MB or binary MiB.

Sandisk's declaration of 64GB means it has approx 64,000,000,000 bytes

might want to change the one about the machine that detects diseases from one drop of blood. Kind of kills the credibility of the rest.