Which Burger Is Different in below image?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

Find the missing number in the image below.

A high school has a strange principal. On the first day, he has his students perform an odd opening day ceremony:

There are one thousand lockers and one thousand students in the school. The principal asks the first student to go to every locker and open it. Then he has the second student go to every second locker and close it. The third goes to every third locker and, if it is closed, he opens it, and if it is open, he closes it. The fourth student does this to every fourth locker, and so on. After the process is completed with the thousandth student, how many lockers are open?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

If an electric train is travelling south, then which way is the smoke going?

Whats the next number in the below number sequence pattern.

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?