If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

Can you tell a 3D object that has just two surfaces?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

What has one letter and starts with an E?

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?

What does below chemistry rebus means?

Why is it against the law for a man living in Delhi to be buried in Mumbai?

A man embarked on a questionnaire game. He kept asking the same question to whomever he found. The answer each time was different.

Can you guess what the question was?

You see me once in June, twice in November, and not at all in May. What am I?