How many words can a pen with half refill write?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
The umbrella is not huge enough to accommodate all 3 ladies yet not a single lady got wet. Why?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

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?

During which month do people sleep the least?

Can you solve the below tricky visual equation?