I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

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?

No matter how little or how much you use me, you change me every month. What am I?

It's pretty hard to give up.
If you remove a part of it, you will be left with a bit.
Even if you remove another part, the bit still remains.
Remove one more and it still remains.

What is it?

Why blonde cannot dial 911?

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.