What question can you never answer yes to?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

A cat, a dog and a monkey were stolen. 3 suspects got caught: Harish, Manoj and Tarun. All we know is each person stole one animal, but we do not know who stole which. Here are the investigation statements. Harish said: Tarun stole the cat. Manoj said: Tarun stole the dog. Tarun said: They both were lying. I did not steal the cat or the dog. Later on, the police found out the man who stole the monkey told a lie. The man who stole the cat told the truth. Can you find out who stole which?

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

What is always in front of you but can’t be seen?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

What is red and smells like blue paint?

What do you see in the image below

Why is the longest human nose just 11 inches?