On my birthday in 2021, my age is equal to the sum of the digits of my birth year. I am less than 100 years old. What could my birth year be?
Jack enters a lift on the 24th floor, which is going up @ 51 floors/minute speed. At the same time Jill enters another lift on the 246th floor, which is going down @ 60 floors/minute speed. At what floor will they be together?
