Which word does the below Plexor means ?

Can you find a five letter word that is left with only two letters if one is removed?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

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?

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

A car meter reading shows 72927 miles a palindromic number.
what is the minimum number of miles you would need to travel to see another palindromic number on the car meter reading?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

Why 1729 is a magic number? Answer Logically.

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

What Time Should the last watch show in the below figure?