Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

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

What does this rebus means ?

There is one four-digit whole number n, such that the last four digits of n2 are the original number n

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?