The Odd One Out

Which is the odd one out and why?

A. Cassius
B. Cassia
C. Casca

B. Cassia is a tropical tree; Cassius and Casca were conspirators against Julius Caesar.

Posted in Brain Teasers

Rotating Coins Around Coins

You have two coins of equal size on a table, situated end to end vertically. If you roll the top coin around the bottom coin until it returns to its original position, how many times will it have rotated?

Twice. See this video for more details.

Posted in Brain Teasers

NDOLA

What does “NDOLA, PAMODZI” mean?

Thanks to the comments, it doesn’t mean anything per se, but it’s a location in Zambia. If that’s all it is, it’s not really a brain teaser, but since we’ve already worked on it, I’m marking it as solved leaving it up for posterity.

Below are former attempts to solve it.

I have yet to figure this one out. NDOLA could mean And lo, or An old, among other things. Pamodzi on the other hand didn’t have any particularly meaningful anagrams. Both words together had over 1,000 anagrams.

I haven’t come up with any other possible meanings.

Posted in Brain Teasers

Alfred’s Tough Cash Request

Alfred is at the bank to cash his $200 check. He tells the cashier he would like some one dollar bills, ten times as many two dollar bills and the rest in fives.

How many of each denomination does the cashier need to give Alfred?

Five $1 bills, 50 $2 bills and 19 $5 bills.

We know that in order to give the rest of the amount in fives, the sum of the one and two dollar bills needs to be divisible by five (i.e. end in 0 or 5).

If we start with a single one dollar bill, we’d need ten two dollar bills to satisfy the request, making $21. But we need a sum that is divisible by 5. So we keep going up, like so:

$1 + $2 * 10 = $21
$2 + $2 * 20 = $42
$3 + $2 * 30 = $63
$4 + $2 * 40 = $84
$5 + $2 * 50 = $105 (Aha! It’s divisible by 5)
$6 + $2 * 60 = $126
$7 + $2 * 70 = $147
$8 + $2 * 80 = $168
$9 + $2 * 90 = $189

So the only option that works is 5 $1 bills and 50 $2 bills, leaving $95 (95 / 5 = 19) to be paid out in 19 fives.

Alfred is one tough customer.

Posted in Brain Teasers

The Correct Name

Donald and Regan are married with four children, named Michael, Farley, Solomon and Larry. They just had a baby girl and are picking the name. It’s down to Olivia, Tiffany and Jasmine. Donald’s brother, a piano teacher, tells them only one of the names would be correct. Which name is it?

Tiffany. The rest of the family’s names start with solfège syllables: Do, Re, Mi, Fa, Sol, La. The last syllable is Ti, for Tiffany.

Posted in Brain Teasers

An Apparition

Two people were in a house. No one came in or went out, but then there were three people. What happened?

The two people were a husband and an expectant wife, who gave birth to her baby.

Posted in Brain Teasers

Three Cuts to Turn a Round Cake Into Eight Equal Slices

How can you cut a round cake three times to make eight equal slices?

Cut #1 – Down the center of the cake (vertically) leaving two equal halves.
Cut #2 – Across the center of the cake (horizontally) leaving four equal slices.
Cut #3 – Through the middle edge of the cake slicing all four of the pieces in equal halves, leaving eight equal slices (four equal tops and four equal bottoms).

Posted in Brain Teasers

What Every Man Has and Gives To Their Wife

What does every man have, some longer or shorter than others and they give it to their wife when they get married?

Note: This may not be appropriate for younger ages.

A last name.

Posted in Riddles
Tagged with

Three Burning Rooms

Three rooms contain:
1) Gold coins
2) Currency notes
3) Cotton bags

If all three rooms catch fire, which room will the ambulance pour water on first?

An ambulance doesn’t pour water.

Posted in Brain Teasers

What Letter Comes Next MAMJJASO

What letter comes next in this sequence?

M, A, M, J, J, A, S, O, ____

N. The letter represent the first letters of the months of the year, starting with March. N is for November, and of course D would be the next one.

Posted in Riddles