You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

I have feet, but no legs. Which animal Am I?

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

Explain how?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

Can you decipher the below rebus?

PBLUESAISNUERSES

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

What is the word or phrase below?
R | E | A | D

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

The answer I give is yes, but what I mean is no. What was the question?