Who developed the base – 60 number system to tell time?
a)Newton
b) Euclid
c) Pythagoras
c) Babylonians
How many second are in one minute?
a) 30
b) 60
c) 120
d) 3600
How many second are in one hour?
a) 30
b) 60
c) 120
d) 3600
