What does below pictogram mean?

Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

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

In a school, 280 students studied chemistry, 254 students studied physics and 280 students studied biology.

97 students studied chemistry as well as physics, 138 students studied physics as well as biology and 152 students studied chemistry as well as biology.

73 students studied all the three branches.

Can you find out the total number of students?

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

I am a mother. However, I never give birth.

I am a father. However, I never nurse my children.

Wandering is not possible for me, but standing still happens occurs rarely.

Who am I?

Can you start the fire using two pieces of wood?

What does this rebus photo means?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?