There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

A man has eighty-one cows ( numbered 1,2,3...81 as such). The beauty is that cow no. 1 gives 1ltr of milk, cow no. 2 gives 2ltrs of milk and so on. The man wants to equally distribute the cows among his nine sons so that each one of them gets the same quantity of milk.

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

What shoe company does this rebus represent?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

Can you name an animal whose killing cannot be performed without spilling your own blood?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

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