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

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?

People make me, save me, change me, raise me. What am I?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

What kind of tree can you carry in your hand?

Can you replace the question mark with the correct number in the below table sequence?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

Count the number of lines in the image below ?