A swan sits at the center of a perfectly circular lake. At an edge of the lake stands a ravenous monster waiting to devour the swan. The monster can not enter the water, but it will run around the circumference of the lake to try to catch the swan as soon as it reaches the shore. The monster moves at 4 times the speed of the swan, and it will always move in the direction along the shore that brings it closer to the swan the quickest. Both the swan and the the monster can change directions in an instant.
The swan knows that if it can reach the lake's shore without the monster right on top of it, it can instantly escape into the surrounding forest.

How can the swan successfully escape?

Can you solve the maths in the below-given picture equation?

Why is the Hole below a Lock?

What is the next number in the series?

15 29 56 108 208 ?

The more it dries, the wetter it becomes. Can you tell what it is?

Can you write down eight eights so that they add up to one thousand?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

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

what's the probability of getting a king or a queen from a pack of 52 cards?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?