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?

Which alphabet is a part of our body?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

I am white when I am dirty, and black when I am clean. What am I?

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

Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

How many times can you subtract the number 5 from 25?