57006

The trick is that the word “dead” represents a number in hexadecimal. That number in base 10 is 57005, and adding one more to include yourself gives you: 57005 + 1 = 57006.

31 years ago.

Here’s one way to solve it.

Let x = how many years ago

We get this equation: 67 – x = 3 × (43 – x)

Solving for x gives us 31.

8 ÷ (3 – (8 ÷ 3)) = 24

The time and date was 12:34 5/6/78, counting from one to eight. The next time this event will occur is 12:34 6 May 2078. Unless someone alive in 1978 lives to be over a hundred, they won’t be alive when it happens again.

64

8² = 64
4³ = 64

Technically, the answer is infinity. If you keep going halfway, you’ll never actually make it to the doorway.

But in practice, after 10 steps you’ll be 1/8th of an inch to the doorway and anyone behind you would say to stop being a baby and take a real step through the doorway already.