How is the moon similar to a dollar?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?

Remove two matchsticks to make the below equation correct.

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Why is the Hole below a Lock?

Andrew sees a very rare bird named "Ruppell's vulture". Soon Andrew was dead. Can you explain the mystery, Mr. Sherlock?

O_er_t_o_

Complete the missing letters of the given word.

For this puzzle, you might have to find logic in something illogical. But hey, it's fun and a healthy little break from your strenuous puzzle-solving sessions.

Can you decipher the meaning in the following cluster of letters?

ITIT,NCENTCENT