What work can one never finish?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

I have branches, but no fruit, trunk or leaves. What am I?

Can you count the number of quadrilaterals in the picture below?

Why is it very easy to weigh a fish?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Imagine a box with two cogwheels, one big with 24 teeth and one small with 8 teeth. The big one is firmly attached to the center of the box which means it does not turn or move while the small one rotates around the big one.

How many times do you think that the smaller wheel will turn compared to the box when it turns once around the big one?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.