Spot what is wrong here in below Picture?

What is the next number in this series?

4,12,84,3612....

10 people came into a hotel with 9 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the tenth guest to wait for a little with the first guest in room number 1. So in the first room, there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the ninth guest to room number 8. Then he returned to room number 1 and took the tenth guest to room number 9, still vacant.
How can everybody have his own room?

Can you find the missing piece of the Porsche?

Count the squares in the matchstick puzzle below?

Can you find a rabbit in the given picture?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

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

Dwayne Johnson was running away with the loot from a heist in his car along with Vin Diesel. One tire was punctured and he dropped down to replace it. While changing the wheel, he dropped the four nuts that were holding the wheel and they fell into a drain. Vin Diesel gave him an idea using which they were able to drive till the rendezvous point.

What was the idea ?

Which fur should we be getting from the Lion?