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.

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

I go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

How many triangles are there on the puzzle below?

John is found dead in a bare field. Nobody killed John,
John did not commit suicide.

Inspector Jacob found a bag just a few meters away from John which could save his life. What was in the bag?

What has a bottom at the top?

There is something which is always coming but never arrives?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?