Which is heavier: a ton of bricks or a ton of feathers?

What has lots of eyes, but can’t see?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

If six children and two dogs were under an umbrella, how come none of them got wet?

Through your logical capabilities, can you make 7 an even?

John and his team plan to rob a safe. They got just one chance to break the code else the local police will be informed. Below are clues:
A) Exactly one number is perfectly placed: 9 8 1
B) Everything is incorrect: 9 2 4
C) Two numbers are part of the code of the safe but are wrongly placed: 0 9 3
D) One number is part of the code of the safe but is wrongly placed: 1 4 7
E) One number is part of the code of the safe but is wrongly placed: 7 8 3

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

Using Only Five 5's and any mathematical operator make sum as 37