The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

I have Rs.50 and I spend it in the way as below.

If 1+9+8=1, what is 2+8+9?

Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)

What number comes next in this sequence:
7 8 5 5 3 4 4 _

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

There is a wide field of corn. A goose finds its way into the field and starts running. Can you find out till which point the goose can run into the field?

why number 8549176320 is one of a kind?

Three friends named Mr. Black, Mr. Yellow and Mr. Green enter a pub on a weekend night. They are wearing either a Black, Yellow or Green shirt.

Mr. Yellow says to them, 'Did you notice that we all are wearing different color shirts than our names?'

To this, the man who was wearing the Green shirt said. 'Wow, thats right.'

Can you identify who is wearing which colour shirt ?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?