The Truck and the Plane

A delivery truck from the post office is sent to the airport to meet a cargo plane at its planned arrival time. The plane lands ahead of schedule and its contents are brought toward the post office by bicycle. After a half hour, the bicycle meets the truck and the mail is transferred.

The truck returns from the post office 20 minutes early. How early did the plane arrive? (Assume all transactions are instantaneous)

The delivery truck arrived back 20 minutes early, so it would have taken 20 minutes to go from where it met the bicycle to get to the airport and back. Therefore, the bicycle and truck met when the truck was 10 minutes from the airport. Adding those 10 minutes to the 30 minutes the truck had already driven to meet the bicycle means the plane arrived 40 minutes ahead of schedule.

Posted in Brain Teasers

Death By Marbles

You are a prisoner sentenced to death. The Emperor offers you a chance to live by playing a simple game. He gives you 50 black marbles, 50 white marbles and 2 empty bowls and instructs you to divide the 100 marbles into the two bowls. You can divide them however you want as long as all the marbles are in the bowls. You will be blindfolded and the bowls and marbles will be thoroughly mixed. You will then choose a single marble from one of the bowls. If the marble is white, you live. Black and you will be put to death.

How do you divide the marbles up so that you have the greatest probability of choosing a white marble?

Place one white marble in one bowl and place the rest of the marbles in the other bowl (49 whites, and 50 blacks).

This way you begin with a 50/50 chance of choosing the bowl with one white marble and living. Even if you choose the other bowl, you still have an almost 50% chance of picking one of the 49 white marbles. There are no guarantees in life, but this gives you the best change of surviving.

Posted in Brain Teasers

Words With Many Faces

My letters become three faces,
One has gone to far away places,
Another sets a standard high,
The third can never be a guy.

What are the three words?

Sailed, ideals and ladies.

Posted in Brain Teasers

Favorite Pet is a Fish

I died and came back to life. My blood is not easily able to go through my body. My favorite pet is a fish. Who am I?

A shark. Sharks experience tonic immobility, also known as apparent death, where they appear to have died. Blood does not easily flow through their bodies, forcing sharks to swim continuously to circulate their blood. Lastly, sharks have pet fish called Remora (sometimes called suckerfish). They feed on parasites on the sharks and leftovers, and they use the shark as transport and protection.

A big thanks to Saravana for answering this.

Posted in Riddles

A Laugh A Cry

A laugh, a cry,
A moan, a sigh.

What am I?

Emotions

Posted in Riddles

Two Hands But Can’t Clap

I have two hands but I cannot clap. What am I?

A clock.

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If My Hand Is Forced I Can Sink Ships

I move quickly with hurried steps,
If my hand is forced I can sink ships,
I’ll cause you to shudder when driving your car,
And haul your fuel to where you are,
I’ll watch you bleed from a cut,
Add a rear and I’ll tell you what’s what.

What am I?

Scuttle. To scuttle is to scurry or run hurriedly. Scuttling is the deliberate sinking of your own ship. Scuttle shake is felt in convertibles where the passengers feel a distinct shudder. A coal scuttle is a bucket-like container to haul coal. A shaving scuttle holds hot water when you’re shaving. And adding a “rear” forms scuttlebutt, or rumors and gossip.

Posted in Riddles

The Start Of What You Might Conceive

I’m the start of whatever you might conceive.
Next I describe a Thanksgiving meal.
Last I transform to a state we all leave.

What am I?

begin, binge, being. Everything has a beginning, Thanksgiving dinner is known for being a meal of excessive consumption and the mortal state of being (or the state of a human being) is one which, for all our efforts to extend, will eventually end.

Posted in Riddles

Inscribed On My Face

Marking mortal privation when what’s under me is in place.
An enduring summation, inscribed on my face.

What am I?

A tombstone (or gravestone, headstone, monument, you get the idea).

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An Alphabetic Phrase

What phrase can be made using the following letters?

A B C D E F G I

Big-faced.

I wouldn’t suggest calling anyone that, unless you want a big red nose from being punched.

Posted in Brain Teasers