Solution:

It can be done as shown below.

Solution:

The Order of stupidity in decreasing order(most stupid to least) is 4,1,2 and 3.

Explanation:
Cutting his own trunk so Guy-4 is most stupid.
Next is Guy-1 as he is gagging on a tree that is to be cut down by guy-2.
Next is Guy-2 as he is not considering him to go down.
Guy-3 is a bad person but not a stupid one.

Solution:

Women-2 as the husband-wife has the matching ring.

Solution:

8.

Explanation:
- The Wire of the extension cord-1 is broken.
- The extension cord-6 does not have a wire.
- One of the sockets of cord-2 is broken
- The cord-4 with just one socket is of no use.

Now,
- Cord-1 will connect to the main switch and one of the sockets will connect to Cord-2.
So two sockets can be used from cord-1.

- One of the sockets of cord-2 will connect to the cord-5 and one of them is useless.
So two sockets can be used from cord-2.

- Cord-5 can use all the sockets, i.e. 4

So,
Total In Use = 2 + 2 + 4 = 8.

Please watch the video for a better understanding

Solution:

Since the beer bottle is closed, No glass will Ever fill.

The video-version of the puzzle is added below.

Solution:

Tank F.

For an explanation, please visit the video.

Solution:

D & C.

For details, Please check the video.

Solution:

The Patient will follow the path from room number-13 to room-no.4 as shown in the picture below.

Solution:

16

Watch Video for more explanation.

Solution:

It can be done as shown in the picture below. You can also watch video For more explanation.