A man dies of old age on his 25 birthday. How is this possible?

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?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

Can you count the number of squares in the figure below?

Which English verb becomes past tense just by rearranging the letters?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

why number 8549176320 is one of a kind?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Make a sentence consisting of three words that have the whole alphabet.