Seemingly Simple Math

What is the answer to this math problem:

8 ÷ 2 (2 + 2)

16 or 1, depending.

According to PEMDAS, parentheses come first: 8 ÷ 2 (4)

Then, even though multiplication is first in PEMDAS, you go left to right: 4 (4) = 16

If you got 1, you’re in good company. That’s what I got at first too but most calculators I’ve tried get 16.

I found this at Popular Mechanics and the debate continues online.

Posted in Brain Teasers

I Wear You Down

I wear you down, yet you will mourn me once I fly.
You can kill me, but I will never die.

Time.

(found in The Copper Gauntlet by Holly Black and Cassandra Clare)

Posted in Riddles

Spell Eighty

How can you spell eighty with only two letters?

A-T (pronounced eighty).

Posted in Brain Teasers

Never Ahead, Ever Behind

Never ahead, ever behind,
Yet flying swiftly past;
For a child I last forever,
For adults I’m gone too fast.

What am I?

Childhood.

Posted in Riddles
Tagged with

Six Faces But No Arms

I have six faces but no arms, and twenty one eyes but I can’t see.

What am I?

A die. There six sides (or faces) and twenty one pips.

Posted in Riddles
Tagged with

What One One One Represents

What do the following numerals represent?

11111121113122223222

The number of syllables in the numbers from one to twenty.

Posted in Brain Teasers

Paula and Quincy

Paula had four times the money that Quincy had, but after Paula gave Quincy $33, Quincy had 3 times as much as Paula.

How much did they each start with?

Paula had $48 and Quincy had $12.

If Q is the amount Quincy had, then 3(4Q – 33) = Q + 33

Solved, Q = 12.

Posted in Brain Teasers

Four Nines To Make a Hundred

How can you make four 9’s equal 100?

99 9/9 = 100

Posted in Brain Teasers

The Thinner It Grows

You use me from your head to your toes.
The more you use the thinner it grows.
For years I was not often used,
Not using me now is not excused.

Soap.

Posted in Riddles

Apples for Leather

Apples for leather,
leather for silk,
silk for tobacco,
all to get milk.

Bartering.

By Sef Daystrom

Posted in Riddles