Doubt doubt doubt

#1

h(K) = floor (m(KA mod 1))

is equation me ’ m ’ and ’ floor ’ ka kya matlab h…can you explain this equation…???

#2

If ‘h’ is the hashing function and is used to hash n keys into a table of size s, where n<=s, the expected number of collision involving a particular key X is less than 1. Can you explain this…???