m4maths Maths Puzzle

There is a man that lives on the top floor of a very tall building. Every day he gets the elevator down to the ground floor to leave the building to go to work. Upon returning from work though, he can only travel half way up in the lift and has to walk the rest of the way unless it's raining! WHY?

Read Solution (Total 2)

m4maths Other Question

What is the next number of the following sequence
21,77,165,285,......
if in a coded language:

14/11/1990= 7615
21/08/1962=6915
17/06/1943=8716
26/10/1967=??

options are:
1.5915
2.6715
3.6319
4.4015