Five friends live on five different floors of the samebuilding. The lowermost floor in the building is numbered 1, the floor above it, number 2 and so on till the topmost floor is numbered 5 . Namita lives on the floor which is second from the top. Sanjana lives on one of the floor between Anand and Ritu. Avdhesh lives on the floor immediately above Namita. Ritu lives on the lowermost floor. Who lives on the fourth floor from the top?