EASY PROBLEMLevel pending
A person goes t work on the 27th floor of a building. The building is of 30 floors. When he comes early and no one else isn there he is able to reach the 12th floor. When it is raining he is able to reach the 27th floor. When other people are there in the lift with him he is able to reach the 27th floor.
Why is it so?