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

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

What breaks yet never falls, and what falls yet never breaks?

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91

I have no life, but I can die. What am I?

Can you count the number of blocks in the picture below?

Which word does the below Plexor means ?

What you cannot hold but it is yours?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?