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

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

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?

You are a prisoner sentenced to death. The Emperor offers you a chance to live by playing a simple game. He gives you 50 black marbles, 50 white marbles, and 2 empty bowls. He then says, 'Divide these 100 marbles into these 2 bowls. You can divide them any way you like as long as you use all the marbles. Then I will blindfold you and mix the bowls around. You then can choose one bowl and remove ONE marble. If the marble is WHITE you will live, but if the marble is BLACK... you will die.'

How do you divide the marbles up so that you have the greatest probability of choosing a WHITE marble?

Can you solve this picture maths equation?

A worker is to perform work for you for seven straight days. In return for his work, you will pay him 1/7th of a bar of gold per day. The worker requires a daily payment of 1/7th of the bar of gold. What and where are the fewest number of cuts to the bar of gold that will allow you to pay him 1/7th each day?

What has 88 keys?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

What is common among 11, 69, and 88?