What Time Should the last watch show in the below figure?

A man lives on the fifteenth floor of an apartment building. Every morning he takes the elevator down to the lobby and leaves the building. In the evening, he gets into the elevator, and, if there is someone else in the elevator, or if it was raining that day, he goes back to his floor directly. Otherwise, he goes to the tenth floor and walks up five flights of stairs to his apartment. Can you explain why he does this?

10+10 and 11+11 can give you the same answer.

Explain how?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

There are hundred red gems and hundred blue gems. The blue gems are priceless while the red gems equal wastage. You have two sacks one labeled Heads and the other Tails. You have to distribute the gems as you want in the two sacks. Then a coin will be flipped and you will be asked to pick up a gem randomly from the corresponding sacks.

How will you distribute the gems between the sacks so that the odds of picking a Blue gem are maximum?

What jumps when it walks and sits when it stands?

What do you answer even though it never asks you questions?

Prove that twice of ten is the same as twice of eleven.