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?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

Before Mount Everest was discovered, what was the highest mountain in the world?

O_er_t_o_

Complete the missing letters of the given word.

What do the following words have in common?

Assess
Banana
Dresser
Grammar
Potato
Revive
Uneven
Voodoo

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

Which digit occurred maximum times between the number 1 and 1000?

Take one out and scratch my head, I am now black but once was red. What am I?

What can you see in the middle of March and April that you can never see in any other month?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H