Seconds in a Year

How many seconds are there in a year?

Hint: You don’t need a calculator

24. If you said 12 for January 2nd, February 2nd, etc that’s close, but you forgot about January 22nd, February 22nd and so on. If you are a math whiz and didn’t need a calculator to perform 60 x 60 x 24 x 365, then 31,536,000 works too. If you used 365.25 to account for leap year, then you are a human calculator, but even that’s not entirely accurate due to the leap second. And even accounting for that, it’s only an approximation that there are 365.2422 days in a year.

Posted in Brain Teasers

Having and Sharing

If you have it, you want to share it.
If you share it, you don’t have it.

What is it?

A secret.

Posted in Riddles

What is the Chance That You’ll Be Correct?

If you choose an answer to this question at random, what is the chance that you will be correct?

a) 25%
b) 50%
c) 60%
d) 25%

This is becomes a self-referential paradox. Both A and D would be correct if there were four unique answers, but since A and D are the same answer, the chance that you would choose a correct answer is 50%, which makes B correct. But if there’s only one correct answer, the odds of choosing the correct one at random goes back to 25%. And around and round you go.

There’s a lot of discussion at Richard Wiseman’s blog and more at Lifehacker, where I first saw this.

Posted in Brain Teasers

Nine-Letter Word, Common as Air

A nine-letter word, common as air,
When each letter’s cut, a new word to pare,
Take a letter each round and continue to one.
Name the word and the path and then you’ll be done.

Surprisingly, there are several nine-letter words that can have one letter removed in each round to make a new word all the way to one letter, which must be ‘a’ or ‘i’. Startling is the most common answer, but I’ve included the other words I’m aware of. I don’t include plural words, like cleansers, drownings, splatters, starvings, trappings and wrappings because it’s kind of cheating.

startling
Remove the l to make starting (or remove the t to make starling)
Remove the t to make staring
Remove the a to make string
Remove the r to make sting
Remove the t to make sing
Remove the g to make sin
Remove the s to make in
Remove the n to make I

splitting
Remove the l to make spitting
Remove the p to make sitting
Remove a t to make siting
Remove the first i to make sting
Remove the s to make ting
Remove the g to make tin
Remove the t to make in
Remove the n to make I

stringier
Remove the r to make stingier
Remove the i to make stinger
Remove the t to make singer
Remove the r to make singe
Remove the g to make sine
Remove the e to make sin
Remove the s to make in
Remove the n to make I

strapping
Remove the s to make trapping
Remove the t to make rapping
Remove the p to make raping
Remove the r to make aping
Remove the a to make ping
Remove the g to make pin
Remove the p to make in
Remove the n to make I

Posted in Riddles

The More There Is The Less You See

The more there is the less you see. What is it?

Darkness

Darkness.  There more darkness there is, the less you can see.

Posted in Riddles
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Run Smoother Than Any Rhyme

What runs smoother than any rhyme, loves to fall but cannot climb?

Water

Posted in Riddles

Mysterious Math

This problem can be solved by preschool children in five to ten minutes, by programmers in an hour and by people with higher education…well, check it yourself.

8809 = 6
7111 = 0
2172 = 0
6666 = 4
1111 = 0
3213 = 0
7662 = 2
9313 = 1
0000 = 4
2222 = 0
3333 = 0
5555 = 0
8193 = 3
8096 = 5
1012 = 1
7777 = 0
9999 = 4
7756 = 1
6855 = 3
9881 = 5
5531 = 0
2581 = ?

What is the missing number and why?

Two. The number is how many closed circles there are in the 4 digits. 0, 6 and 9 each have one, 8 has 2.

Posted in Brain Teasers

She Was Never There

Emily’s celebration was a success.
Except nobody invited her.

She was at the celebration but was never really there.

How could this be?

Emily passed away and it was a celebration of her life. Of course you don’t invite the deceased. Her body was in the casket, but Emily the person wasn’t there.

Posted in Brain Teasers

Ten White Man On A Dirt Road

Ten white men standing on a dirt road.
Killed by three eyes as black as night.

What happened?

Someone bowled a strike. The ten white men are the pins, the dirt road is the bowling alley (it’s not dirt, but it’s the color of dirt, and if it said a smooth wooden alley it wouldn’t be much of a riddle). Three eyes as black as night are the finger holes in the bowling ball.

Posted in Riddles

Humans and Animals

I am important to both human beings and animals. Both search for me but it is hard to find me. I travel to benefit them. What am I?

A scent or smell. A scent is important to both humans and animals and both search for scents (for different reasons). A scent travels through the air to benefit humans and animals, again, for different reasons.

Special thanks to Vavessa for the answer to this one.

Posted in Riddles