You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

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

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

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

Explain?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

There are three light switches outside a room. One of the switches is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

A clock loses 10 minutes each hour. If the clock is set correctly at noon, what time is it when it reads 3 PM?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?