There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

What brings you down but never up?

Can you find the least possible number such that

If the number is divided by 3, it gives the remainder of 1;
If the number is divided by 4, it gives the remainder of 2;
If the number is divided by 5, it gives the remainder of 3;
If the number is divided by 6, it gives the remainder of 4.

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?

Rearrange the letters in "new door" to make one word.

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

What's the only room from which no one can enter or leave

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag