A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

A person was killed at a house party. When the police arrive, there are six people present in the house who are the friends of the victim. The name of the friends is Rohit, Aman, Nick, Gagan, and Randy.

Near the dead body, they find a few numbers written with blood by the victim on the floor. The numbers are 8, 5, 4, and 11.

The police arrests one of the friends for the murder. Whom did they arrest and why?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

There is one four-digit whole number n, such that the last four digits of n2 are the original number n

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

why number 8549176320 is one of a kind?

Given the numbers between 1 and 1 million, what is so special about the number 40 that it makes the number stand out of the crowd?

Can you find out which options fits best with the missing column?