What do you answer even though it never asks you questions?

I am white when I am dirty, and black when I am clean. What am I?

There are three boxes which are labeled as Rs100, Rs150, and Rs200. One box contains two notes of Rs. 50. The second box contains one note of Rs50 and one note of Rs100 The third box contains two Rs. 100 notes. All boxes are labeled incorrectly.

What is the minimum number of boxes you must check in order to label all boxes correctly?

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

Which Travels Faster? Solve below famous picture riddle:

My location can be determined by the below rebus.
So where am i ?

What does this rebus mean?

O
N
C
E
TIME

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?