What Times Seven Is All Fours?

What is the smallest integer that is all 4s when multiplied by 7?

63,492 × 7 = 444,444

Posted in Brain Teasers

Why This Particular Order?

Why are these letters grouped in this particular order?

1) DFGHLPRU
2) KSTV
3) CO
4) AIW
8) MN

The letters are grouped by the number of U.S. States beginning with that letter. M and N are tied for each starting eight states.

Posted in Brain Teasers

Midway Numbers

Select the number that is midway between the lowest number and the highest number.
Which number is midway between that number and the number that is nearest the highest number?

35  5 52 36 67
69  4 51 37 71
55 68  3 53 39

53.

37 is midway between 3 (the lowest number) and 71 (the highest number).
53 is midway between 37 and 69 (nearest to the highest number).

Posted in Brain Teasers

What Word Could Be Added to Make New Words?

What word could be added to all of these words?

apple
cone
lake
tree
ridge
nuts

Pine.

Posted in Brain Teasers

Snake Coiled Round and Round

Snake coiled round and round,
Snake deep below the ground,
Snake that’s never had a head,
Snake that binds but not with dread.

A rope.

Posted in Riddles

Stand Take Mine

What does this sentence represent?

Stand   Take  Mine  Taking
  I     You    To     My

I understand you undertake to undermine my undertaking.

Posted in Brain Teasers
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Seven Letters and Something You Eat

I have seven letters and am something you eat. My only anagram can help your pain. If you remove my first 2 letters I wear things down. Removing my first 3 letters is an adjective and removing my first 4 letters leaves a measure of time.

What am I?

Sausage. You eat sausage, assuage is the only single-word anagram and provides relief from pain. Usage wears things down, sage is an adjective and age is a measure of time.

Posted in Riddles

An Ancient Invention

What ancient invention allows people to see through walls?

A window.

Posted in Riddles

Horse Fence

Farmer Finnegan needs to build a fence to keep his horses on his property. He only has a little over 1.5 miles of fence materials, but there’s also a mile-long straight river running through his property. What shape should he use for the fenced in area to give his horses the most space possible?

Our dear friend Finnegan should build a half-circle fence with the river as the diameter, giving the horses about 0.4 square miles to frolic and play in.

Area of semi-circle = πr2 / 2 = π × .5 miles2 / 2 = 0.3927

Posted in Brain Teasers

What Goes In the Water Red?

What goes in the water red
And comes out black?

Iron

Posted in Riddles