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# rocdocmac

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1. ## Solve This Riddle And Message Me The Answer And I Will Give Everyone Free 1 Year Netflix Subscription If You Are From US

He was born in a hospital ...

6. ## Mensa problem

Sent this via email on 30 April

8. ## Burning Rope Question (only one rope)

Donald, that's what I thought too!
9. ## The minimum distance from the Earth to Mars

Nothing wrong with the "formula" in red! The distance here is expressed in parsec (pc), where 1 pc ~31 trillion km.
10. ## Can you please solve

For interest's sake, if no true fractions were involved at all, there is an alternative solution ...

The long way ...
12. ## Andy's Birthdate

YAY! second number: the last digit of powers of 3 runs through the cycle (3971), with exponent divisible by 4 ending in 1. 556677 is 1mod4 so it ends in 3.

15. ## Andy's Birthdate

Earlier today (whilst attending his birthday party) I asked Andy his age, but he said that I can figure that out easily by myself! All I had to do was to add four numbers together. The first of these four numbers is the last digit in the figure obtained when 2 is raised to the power of 667788 (2667788). Similarly, I had to find the last digit in the evaluation of 3556677, 7445566, and 8334455 to complete the sum. If today is the 12th of March 2020, when was Andy born?
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