Can you find the key in the picture below?

An evil man kidnapped someone and made them take one of two pills. One was harmless, but the other was poisonous. Whichever pill the victim took, the kidnapper took the other one. The victim took their pill with water and died. The kidnapper survived. How did the kidnapper get the harmless pill?

When can we add 2 to 11 and get 1 as the correct answer?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

If,

Akriti = 631
Levis = 521
Sroti = 521
Aneel = 533
Then,
Sunil =?

What is the next number?

77, 49, 36, 18 ?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?