Riddles and Brain Teasers

Two Four Three Five Six

0 2 4 3 5 6 8 9 7 11 10 12 13 14 15 16 18 17 20 21 22 19 24 23 26 25 28 29 27

What is the next number in the sequence?

31. The tenth number is 10 + 1 = 11. The twentieth number is 20 + 1 = 21, therefore the thirtieth number is 30 + 1 = 31.

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Cheese Made Backwards

What cheese is made backwards?

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Edam cheese.

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Lighter Than a Feather

I’m lighter than a feather but even the world’s strongest man can’t hold me for more than a few minutes. What am I?

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Breath. Air is light, but even Stig Severinsen, the world record holder can only hold his breath for 22 minutes. The world’s strongest man can’t beat that, but you can have the pleasure of telling him to his face.

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Look In My Face

Look in my face and I am someone,
Look in my back I am no one.

What am I?

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A mirror. The face of a mirror shows your face, but the back of a mirror shows nothing but dust and cardboard (depending on the type of mirror).

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Tagged with What am I?

Placed On the Table But Never Eaten

What is placed on the table, cut and passed but never eaten?

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A deck of cards. You play card games on a table, cut the deck, then deal (or pass out) the cards, but you only eat the snacks.

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Debbie’s Dragster

Debbie starts driving her dragster from rest and constantly accelerates to 60 mph in 10 seconds. How far does she travel in those 10 seconds?

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1/12 mileTen seconds is 1/6 of a minute and 1 minute is 1/60 of an hour, so 10 seconds is 1/360 of an hour.If you graph her trip with the speed on the y-axis and the time on the x-axis, you get a triangle with height of 60 mph and width of 1/360 of an hour. To calculate the area of the triangle, you multiply 1/2 × 1/360 × 60 = 1/12.

1/12 mile

Ten seconds is 1/6 of a minute and 1 minute is 1/60 of an hour, so 10 seconds is 1/360 of an hour.

If you graph her trip with the speed on the y-axis and the time on the x-axis, you get a triangle with height of 60 mph and width of 1/360 of an hour. To calculate the area of the triangle, you multiply 1/2 × 1/360 × 60 = 1/12.

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Who May Enter?

A green glass door admits only certain objects. Apples and balls are allowed, but pears and bats aren’t. What determines whether an item can enter?

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All words with a repeated letter are allowed. Green glass door, apple and ball.

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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?

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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

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

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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?

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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.

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Touch Me and I’m Gone

Touch me and I’m gone,
But to you I belong.
I stay with you for life,
But I am not seen by your wife.

What am I?

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Your reflection in the water.

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