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.

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

Why did Navjot Singh Sidhu put the new January calendar in the freezer

What is the fastest way to double your money?

Why did Buffon take the goal with him after every Juventus match?

What is the centre of gravity?

How can you make number one disappear by adding something to it?

Can you make four (4) nines (9) equal 100?

Using eight eights and addition only, can you make 1000?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?