What does this rebus mean?

O
N
C
E
TIME

You need to arrange three 7 and mathematical symbols to form number 1?

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.

If 21x = 79x, what is the value of x?

How can a man go eight days without sleep?

A man fell off a smuggling boat into deep water. He could not swim and he was not wearing anything to keep him afloat. It took 30 minutes for the people on the boat to realize someone was missing. The missing man was rescued two hours later on the return trip. Why didn't he drown? Note:- He didn't know swimming, the sea was deep, and He wasn't holding anything

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

What kind of tree can you carry in your hand?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

What number when divided in half becomes zero?