সব প্রশ্নে ফিরে যান
Math
How long does a train 110 metres long running at the speed of 72 km/hr take to cross a bridge 132 metres in length?
A) 9.8 sec
B) 12.1 sec
সঠিক উত্তর
C) 12.42 sec
D) 14.3 sec