Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Can you count the number of triangles in the given picture?

Can you fill the blank with the correct number?

6 30 870 756030 _____

When is the top of a mountain similar to a savings account?

John was writing his first book. After saving the document, he locked his laptop with a password and mentioned some phrases for the hint box.

A friend of his tried opening his laptop but found out that it was password protected. Following is the hint that appeared.
1 mobile 3 books 2 roars 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches.

Can you help him in cracking the password?

A girl says this to her best friend: “I was born in 1955, and I celebrated my 17th birthday last weekend.” Her best friend thinks she’s lying, but she’s actually correct. How is that possible?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

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?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?