What does an Island and the letter T have in common?

Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

Who has married many women but was never married?

Can you name an animal whose killing cannot be performed without spilling your own blood?

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?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

Katniss and Peeta are liars. They both lie on some specific days.

Katniss lies on Fridays, Saturdays and Sundays. She speaks the truth on all other days.

Peeta lies on Tuesdays, Wednesdays and Thursdays. He speaks the truth on all other days.

Can you tell that one day of the week when both of them will say "Tomorrow, I will lie."?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

Decode this picture on T-Shirt and tell what it says ?