ABCD equals DCBA

What 4-digit number abcd satisfies this equation?

4 × abcd = dcba

2178

4 × 2178 = 8712

Posted in Brain Teasers

In Different Ways It’s Proudly Shown

In different ways, it’s proudly shown,
though many like it to have been sewn.
It’s never torn from being worn,
but when it’s torn, it should be burned.

A flag. They are displayed proudly in a variety of ways and are sewn on shirts. They are discarded from being too worn, but if torn or worn, they’re burned out of respect.

By Sef Daystrom

Posted in Riddles

Cannot Keep Until Given

You cannot keep me until you have given me. What am I?

Your word.

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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

All In White, A Fossil

All in white, a fossil,
fresh snow, a loan, the sky,
But just what am I?

A bride (something old, something new, something borrowed, something blue).

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The Man in the Picture

A man is looking at a picture on the wall and says, “Brothers and sisters I have none, but this man’s father is my father’s son.”

What is their relationship?

The man in the picture is the onlooker’s son. Since he doesn’t have any brothers or sisters, the statement my father’s son can only be himself. A shortened version would be this man’s father is me, making him the father of the man in the picture.

Posted in Brain Teasers

Marble Walls White as Milk

In the marble walls as white as milk,
Lined with skin as soft as silk,
Within a fountain crystal clear,
A golden apple does appear.
No doors are there to this stronghold
Yet thieves break in and steal the gold.

An egg or egg yolk. This is a variation of A Box Without Hinges.

Posted in Riddles

You’ll Have Me At Night

You’ll have me at night and if you remove the first letter I denote the top, such as on a train

Supper. You eat supper at night, and removing the first letter leaves upper. Thanks to Dude for figuring it out.

Posted in Riddles

Stocking the Shelves

Alfred and Bill are clerks at the local grocery store. Alfred can stock a shelf in 20 minutes, but Bill is new and takes 30 minutes. How long would it take for them to stock a shelf together?

Working together they can stock a shelf at a rate of 1/20 + 1/30 (or 5/60) per minute. They’ll finish in 12 minutes

Posted in Brain Teasers

Next Month In the Sequence

What month comes next in this sequence?
July June March May ???

November, the next month in alphabetical order starting with July.

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