In the image given, you can find several triangles. Can you count them all?

What does below rebus means ?

Can you find out the total number of triangles in the given figure?

I have eight fingers and two thumbs but I do not live. What Am I?

John and his team plan to rob a safe. They got just one chance to break the code else the local police will be informed. Below are clues:
A) Exactly one number is perfectly placed: 9 8 1
B) Everything is incorrect: 9 2 4
C) Two numbers are part of the code of the safe but are wrongly placed: 0 9 3
D) One number is part of the code of the safe but is wrongly placed: 1 4 7
E) One number is part of the code of the safe but is wrongly placed: 7 8 3

It is always ahead of me yet I can never see it. What is it?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

What has many teeth, but cannot bite?

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?

With the help clues provided in the image, can you find the 5 digit key?