What building has the most stories?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Count the number of triangles in the given picture.

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

A car is crossing a 20 km-long bridge. The bridge can support at most 1500kg of weight over it. If somehow, the weight on the bridge becomes more than that, it will break.

Now, the weight of the car is exactly 1500kg. At the midway, a bird comes and sits on the roof of the car. This bird weighs exactly 200 grams.
Can you tell if the bridge breaks at this point or not?

No matter how little or how much you use me, you change me every month. 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?

A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?