YOUR LOCKET IS EMPTY BUT THERE STILL SOMETHING IN IT RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

Yes, you should switch the envelope. In the beginning when you picked up the envelope, you had a 1/3 probability of finding an offer letter in the envelope. There was 2/3 chance that the letter was there in the two envelopes on the table.

If you keep your selected envelope, you still have a 1/3 chance of finding an offer letter in that. However, since the interviewer has removed one empty envelope from the table, if you switch, you have a probability of 2/3 that the offer letter is inside that. Did you answer this riddle correctly?
YES  NO  

Darkness Did you answer this riddle correctly?
YES  NO  

Just one, after which it will no longer be empty. Did you answer this riddle correctly?
YES  NO  

First fill the 8 liters jug complete - 4, 8, 0
Fill the 5 liters jug with 8 liters jug - 4, 3, 5
Pour back the beer from 5 liters jug to 12 liters jug - 9, 3, 0
Pour the 3 liters from 8 liters jug to 5 liters jug - 9, 0, 3
Fill the 8 liters jug completely from 12 liters jug - 1, 8, 3
Fill the 5 liters jug from the 8 liters jug - 1, 6, 5
Pour the entire 5 liters jug back in 12 liters jug - 6, 6, 0

You have successfully split the beer into two equal parts. Did you answer this riddle correctly?
YES  NO  

Push the cork into the bottle, and shake out the coin. Did you answer this riddle correctly?
YES  NO  

I am a door Did you answer this riddle correctly?
YES  NO  

A bottle of gin. Did you answer this riddle correctly?
YES  NO  

Answers is "Cappuccino" (A Type of Coffee)

Baristas create quite fancy artwork on the milk foam on top of your cup.
Many people take pictures of that and post it on Instagram, Facebook etc.

When the cup is empty, the milk is gone.(Pictures Disappear)
"Anxious hearbeats stilled" refers to the addiction some people have towards coffee.

Many people drink coffee, especially in the morning
(in Italy, you drink Cappuccino only in the morning, in the afternoon you would go for an Espresso).
Coffee puts you in motion.

Well, coffee can keep you from sleeping,
after all that's why most people need it in the morning. Did you answer this riddle correctly?
YES  NO  

20 foreheads! Did you answer this riddle correctly?
YES  NO  

Push the cork into the bottle and shake the coin out! Did you answer this riddle correctly?
YES  NO  

Barty Crouch Jr Did you answer this riddle correctly?
YES  NO  

Mirror Did you answer this riddle correctly?
YES  NO  

One, then it isn't empty anymore! Did you answer this riddle correctly?
YES  NO  

Water Did you answer this riddle correctly?
YES  NO  

1, after that your stomach is not empty Did you answer this riddle correctly?
YES  NO