In this task, you need to answer the given multiple-choice question on the physics. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

[Q]: Problem: what is the greatest possible length which can be used to measure exactly the lengths 10 m 50 cm , 14 m 55 cm and 50 cm ? 
Options: a ) 20 cm , b ) 24 cm , c ) 30 cm , d ) 10 cm , e ) 5 cm
[A]: e


[Q]: Problem: a train 180 m long is running with a speed of 55 km / hr . in what time will it pass a man who is running at 7 km / hr in the direction opposite to that in which the train is going ? 
Options: a ) 5.5 , b ) 10.45 , c ) 7 , d ) 8 , e ) 9.5
[A]: b


[Q]: Problem: if the l . c . m of two numbers is 750 and their product is 18750 , find the h . c . f of the numbers 
Options: a ) 23 , b ) 28 , c ) 48 , d ) 25 , e ) 99
[A]:
d