How can one talk without saying a single word?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Find the missing number in the image below.

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

Find out the number of circles in the given picture having Illusion

What does below chemistry rebus means?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

What can you see in the middle of March and April that you can never see in any other month?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

What does this mean?

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