My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

If eleven plus two equals one, what does nine plus five equal?

Chef Andrea has to light the kitchen stoves to open her restaurant for the day. There are three stoves in the kitchen: A glass stove, a brick stove, and a wood stove. She only has one match. Which does she light up first?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

How can you make a TV, a bed, a dog, and a car liquid?

Find out the number of circles in the given picture having Illusion

What does this Rebus Picture mean?