Eight of us go fourth, not back, to protect our king from an attack. What are we?

I shave every day, but my beard stays the same. What am I?

In my garden, I have many trees but only one of them is the mango tree. In these mango trees, there are some mangoes(as expected).

But after a strong wind, there are neither mangoes on the tree nor on the ground. Explain?

Three people check into a hotel. They pay $60 for the rent of the room. After they check-in, the manager realize that the rent for the room is $55. So, he gives $5 to the bellboy and asks him to give it to them. The bellboy thinks that it will be difficult for the three people to share $5 among them and seeking the personal benefit, he pockets $2 and gives the remaining $3 to them.

Now, each person paid $20 and got back $1. In this manner, each of them paid just $19 which totals to the amount of $57. The bellboy has $2 with him and adding them, we get $59. So where is the remaining $1?

An explorer goes on an exposition in the jungle. He sets up camp in the middle of the jungle. The next morning he sees something with a head and a tail, but he is not afraid. What did he see in his bag?

Identify the next two numbers in this series.

101, 112, 131, 415, 161, 718, ???, ???

What is the next number in this matchsticks series riddle?

What 5-letter word typed in all capital letters can be read the same upside down?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Can you replace the question mark with the correct number?