No. I.

Two countrymen were going along the road, each driving sheep.

Said one, "Hi, neighbor, give me one of your sheep, and then I shall have twice as many as you will have."

"Nay, neighbor," replied the other, "give me one of your sheep, and then we shall both have the same number."

How many sheep did each have?

No. II.

An old man lived in a little hut by a bridge which crossed a deep river.

One day a wicked water-spirit appeared to him and said: "My friend, I know you are very poor. Now I will increase whatever money you may have twofold, asking only in return this small favor, that every time you cross the bridge you will throw twenty-four cents into the water, and at the same time the money you have left shall be doubled." The poor old man was delighted at what he thought a generous offer of the water-spirit, and faithfully fulfilled all the conditions; but, to his sorrow and astonishment, when he had three times thrown the tribute of twenty-four cents to the water-spirit, he found himself penniless.

How much money did he have when the water-spirit first appeared to him?

No. III.