Spot 5 differences in two Christmas tree below:

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

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.

If we change the South-East direction into North and North-East into West and all others similarly.
Can you find out which direction will be in the place of South-West direction?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

What does a man do only once in his lifetime, but women do once a year after they are 29?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?