সব প্রশ্নে ফিরে যান
Math
If 1/2 of the air in a tank is removed with each stroke of a vacuum pump,what fraction of the original amount of air has been removed after 4 strokes?
A) 15/16
সঠিক উত্তর
B) 8-Jul
C) 4-Jan
D) 8-Jan