Up a Drainpipe Down but Not Down a Drainpipe Up

What can go up a drainpipe down but not down a drainpipe up?

An umbrella.

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Bowl That Can’t Be Filled

I am as round and deep as a bowl, but all the world’s water couldn’t fill me up. What am I?

A sieve.

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Four Chains in One Loop

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

Three cuts. Cut each link in one chain. Separate them, and use the links to join the ends of the three intact chains.

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Stars Awash in a Sheen of Light

Stars awash in a sheen of light
It calls out loud in vile delight.
Listeners endure in fright.
Vicious brute that reigns at night,
Evil whelped of heinous bite,
Renewed by wax, it regains might.
A leading way to slay the beast,
Get the hidden weapon thus released.

What is this describing?
Hint: The first letter of each line has a clue

A werewolf (vulnerable to silver bullets).

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Two Hands But Can’t Clap

I have two hands but I cannot clap. What am I?

A clock.

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Apples, Ice and Flowers

Apples, ice, and flowers can do it.
Pears, stones, and coins can’t.

Float.

By Sef Daystrom

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Twenty from Three 3s

What’s the simplest way to make 20 using only three 3s (no other digits) and a combination of mathematical operations using any of these symbols?

+ – × / ^ ! √ . ()

(3 + 3) / .3 = 20

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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).

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A Bridge to Switzerland

During WWII, there was a bridge connecting Germany and Switzerland, and on the German side, there was a sentry tower with a guard in it. He would come out every three minutes to check on the bridge, and he had orders to turn back anyone who tried to get into Germany, and shoot anyone trying to escape without a pass. There was a woman who desperately needed to get into Switzerland, and she knew she didn’t have time to get a pass. It would take her at least six minutes to cross the bridge, but she managed to do it. How?

She walked on the bridge towards Switzerland for 3 minutes and just as the guard was about to come out, she turned around walking back to Germany. The guard saw her and asked for her pass but she didn’t have one and was sent back (or what the guard thought was back) to Switzerland. In her case it was the very country she wanted to go to.

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Mario’s Racing Grandma

Mario is testing out a new car at the racetrack. His grandmother took it for a mile lap and averaged 30mph. How fast does Mario have to drive in the second lap to average 60mph for the two miles?

90mph is an alluring answer, but it’s impossible. At 90mph the second lap would take 40 seconds. If Grannie’s first lap at 30mph took 2 minutes, traveling 2 miles in 2 minutes and 40 seconds is an average speed of 45mph. Traveling an average speed of 60mph for 2 miles would take 2 minutes and since the grandma’s lap took all of those 2 minutes, even if Mario could break the sound barrier he wouldn’t be able to average 60mph.

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