When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

What has to be broken before you can use it?

How many triangles can you find in this given picture?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

What Time Should the last watch show in the below figure?

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?