You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

A horse was tied to a rope 5 meters long and the horses food was 15 meters away from the horse. How did the horse reach the food?

How can you make number one disappear by adding something to it?

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Solve the mathematical equation in the picture below.

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

Find the missing number in the image below.

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?