Replace the question mark with the correct number.

Which tank will fill first?

What is the largest number you can write with just 3 digits?

Can you tell a 3D object that has just two surfaces?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

Can you divide numbers from 1 to 9 (1 2 3 4 5 6 7 8 9) into two groups so that the sum of the numbers of each group is equal?

Note: 9 cannot be turned over to make it 6.

What is the next number in the series?

15 29 56 108 208 ?

Four cars come to a four-way stop, each coming from a different direction. They can’t decide who got there first, so they all go forward at the same time. All 4 cars go, but none crash into each other. How is this possible?

Count the squares in the matchstick puzzle below?