With the help clues provided in the image, can you find the 5 digit key?

Replace the question mark with the number below given a simple math problem.

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?

A little girl goes to the store and buys one dozen eggs. As she is going home, all but three break. How many eggs are left unbroken?

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

Find the last number in the series below:

voN luJ yaM raM ---

A man always keeps a spare tyre in his car. To make full use of all the five tyres, he changes the tyres in a manner that for a distance of 1, 00,000 km, each of them runs the same distance.

Can you calculate the distance travelled by each tyre on that journey?

If you say my name, I will no longer exist. What am I?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?