By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

A container contains 100 eggs. They can be either fresh or rotten. What is sure is the fact that there is at least one fresh egg in that container.

If you are asked to pick two eggs randomly from the container, at least one of them will be rotten.

Can you calculate how many eggs in that container are fresh?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

What Time Should the last watch show in the below figure?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?