Slice My Head

You use a knife to slice my head and weep beside me when I’m dead.

An onion.

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I Hide In A Dark Tunnel

I hide in a dark tunnel awaiting my time.
I can only be released by pulling back.
Once released, I may do unspeakable damage.

A bullet.

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Divisible By One To Ten

What is the smallest number that is evenly divisible by 1 through 10?

2520.

2520/1 = 2520
2520/2 = 1260
2520/3 = 840
2520/4 = 630
2520/5 = 504
2520/6 = 420
2520/7 = 360
2520/8 = 315
2520/9 = 280
2520/10 = 252

Posted in Brain Teasers

How to Save Gas

If you could chose to increase the average fuel economy of a car, which of these would save the most fuel?

1. 10mpg -> 12mpg
2. 12mpg -> 15mpg
3. 15mpg -> 20mpg
4. 20mpg -> 30mpg
5. 30mpg -> 60mpg

It turns out they all save the same amount of fuel.

If you travel 100 miles:

100 / 10 = 10 gallons used
100 / 12 = 8 1/3 gallons used

10 – 8 1/3 = 1 2/3 gallons saved

100 / 30 = 3 1/3 gallons used
100 / 60 = 1 2/3 gallons used

3 1/3 – 1 2/3 = 1 2/3 gallons saved

Posted in Brain Teasers

What Are The Next Three Numbers in the Series?

What are the next three numbers in this series?

4
6
12
18
30
42
60
72
102
108
?
?
?

Each number is surrounded by a prime number.

4 – 3 and 5 are prime
6 – 5 and 7 are prime
etc.

The next three numbers after 108 that have primes before and after them are:

138, 150 and 180.

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What Everleigh Likes

Everleigh likes knights but not batteries, writing but not typing and to listen but not to sing. Does she like an unknown or a famous author?

Unknown. Everleigh likes words with silent letters.

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Remove Six Letters

Remove six letters from this sequence to reveal a familiar English word.

BSAINXLEATNTEARS

The familiar English word that remains is BANANA after removing the phrase “SIX LETTERS”.

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Sixteen, Twenty-six, Then What?

Fill in the missing numbers in this number series.

16, 26, ?, 43, 50, ?, 61, 65, ?, 70, 71

The method to create the series is start by adding 10, then decrease the addend by 1 for each new number in the sequence. That gives us:

16 + 10 = 26
26 + 9 = 35
35 + 8 = 43
43 + 7 = 50
50 + 6 = 56
56 + 5 = 61
61 + 4 = 65
65 + 3 = 68
68 + 2 = 70
70 + 1 = 71

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An Insect And a Half

I am an insect. Half of my name is another insect. What am I?

Beetle. (Bee is the other insect).

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Working With Something In Its Eye

What always works with something in its eye?

A needle. Thread goes in the eye of the needle when you sew. If you sew…

Posted in Riddles