Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?

One day, all the courtiers from Akbar's court were gathered in the assembly hall when one of them told the Emperor that all his valuables had been stolen by a thief the previous night.
This shocked the Emperor to his core as the place where that courter stayed was the most secured in the kingdom. The Emperor thought that it is not at all possible for an outsider to enter into the courtier's house and steal the valuables. Only another courtier could commit this crime. He quickly called Birbal to identify the thief.
Birbal thought for a while and successfully solved the mystery by identifying the thief in just one statement.
What did Birbal say?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

I have a big mouth and I am also quite loud! I am NOT a gossip but I do get involved with everyone's dirty business.

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

Find the next number in the following series:
6, 14, 26, 98, __?