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?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Can you move 2 matchsticks to form four equal sized squares.

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

Can you find out the number that should replace the question mark with a valid reason?

What does below Rebus say?

XLR8

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

What question can you never answer yes to?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?