What will you call your mother's brother's brother-in-law?

What has lots of eyes, but can’t see?

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

What type of tree can I carry in my hand?

The sum of a mother, her baby and her dog's weight is 170 Kg. How much does the baby weigh if the mother weighs 100 kg more than the combined weight of the baby and the dog, and the dog weighs 60 per cent less than the baby?

What's the only room from which no one can enter or leave

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91