What does this rebus riddle means ?

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?

What does this simple rebus mean?

All Marigolds are flowers.
Few Flowers are used to make colors.
Therefore, some Marigold are used to make colors.

True Or False?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

Can you solve below mathematical equation?

2^1234 - 2^1233

Why Wine Glass Stem is so long?

What do you call a fish without an eye?

A bomb exploded in a room full of married couples and no one died. How?

Can you count the number of triangles in the picture below?