Lying On Certain Days of the Week

Angel lies on Mondays, Tuesdays and Wednesdays but tells the truth the rest of the week.

Brenda lies on Thursdays, Fridays and Saturdays, but tells the truth every other day.

Angel says, “Yesterday I was lying.”

Brenda replies, “So was I.”

What day was it?

Thursday.

Putting the information in a table makes it easier to solve. We’ll use A for Angie, B for Brenda, T for truth and F (false) for lying.

 SMTWThFS
ATFFFTTT
BTTTTFFF

To begin with, there aren’t any days where both of them told the truth and lied the day before, so we know one of them must be lying.

So we have two options, either Angel is lying or Brenda is.

Option 1. Angel is lying.

In order for this to be the case, she needs to be lying today and telling the truth yesterday, so we need two days in a row with T F. And if Brenda is telling the truth, she would need two days with F T. That means we’re looking for two days that have

Angie:  T F
Brenda: F T

Option 2. Brenda is lying.

This is just the reverse of the above, so we need to find:

Angie:  F T
Brenda: T F

The only day that matches either of the two options is Thursday, and it’s option 2. Brenda is the liar.

Posted in Brain Teasers

No Thicker Than Your Finger

No thicker than your finger when it folds.
As thick as what it’s holding when it holds.

A sack.

By Sef Daystrom

Posted in Riddles

A Medication of Three Parts

I’m a medication with three parts. The first part is the surname of someone who has been a Mary and a Maria. The second part is a vital organ and the last is plentiful in the ocean.

What am I?

Andrews Liver Salts, an antacid. Julie Andrews played the role of Mary Poppins in the movie of the same name, and Maria in the Sound of Music. It’s tough to live without a liver and a taste of the ocean always includes a touch of salt.

Posted in Riddles

Show Your Work

Solve this one carefully!

230 – 220 x 0.5 = ?

You probably won’t believe it, but the answer is 5! How can this be true?

The answer is 120, and 5! = 5 × 4 × 3 × 2 × 1 = 120

Credit to John May for this one.

Posted in Brain Teasers

I’m Something You Might Eat But I Also Kill

I’m something you might eat, but I also kill.
I can cause blindness and burns.
Because of me, people lose limbs.
I’ve even been known to crash cars.

And yet I’m considered beautiful
Small children play with me and parents don’t mind.
Some people even live inside of me.

What am I?

Snow. Every kid has taken a bite of snow, but thousands of people die every year in snowstorms. Watch out for photokeratitis, otherwise known as snow blindness. And if you’re exposed to snow for too long, you can lose limbs to frostbite. Just an inch or two of snow makes them treacherous.

A recent snowfall makes the world white, and kids love to build snowmen, snow forts and have snowball fights. Some people live in igloos, built out of snow.

Posted in Riddles

I Drift Forever With The Current

I drift forever with the current
down these long canals they’ve made
Tame, yet wild, I run elusive
Multitasking to your aid.
Before I came, the world was darker
Colder, sometimes, rougher, true
But though I might make living easy,
I’m good at killing people too.

Electricity (or lightning).

Posted in Riddles

Hello Father

A women and daughter walked into a restaurant. A man walked past and the women both said, “Hello, Father”. How is this possible?

The man was a priest.

Posted in Brain Teasers

A Silent Murder Witness

Emily witnessed a murder in early January but didn’t call the police. Why?

It was a murder of crows.

Posted in Brain Teasers

Lucky Number Seven

How is 7 different from the rest of the numbers from 1-10?

7 (seven) is the only one with two syllables.

Posted in Brain Teasers

Buried Alive and Dug Up Dead

You bury me when I’m alive, and dig me up when I’m dead. What am I?

A plant.

Posted in Riddles
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