Which tank will fill first?

Count the number of triangles in the below picture?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who 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?

Which letter of the alphabet has the most water?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

What is wrong in the below Picture?

Once while in his court, King Akbar asked Birbal to write something on a wall that makes one sad when read in good times and makes one happy when read in sad times.

He took only a few moment and wrote something that fit the requirements. What did he write?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Can you write down eight eights so that they add up to one thousand?