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'.

[EX Q]: Problem: a courtyard is 25 meter long and 16 meter board is to be paved with bricks of dimensions 20 cm by 10 cm . the total number of bricks required is
Options: a ) 16000 , b ) 18000 , c ) 20000 , d ) 22000 , e ) 24000
[EX A]: c

[EX Q]: Problem: if the product of two numbers is 45276 and their h . c . f . is 22 , find their l . c . m .
Options: a ) 2574 , b ) 2500 , c ) 2100 , d ) 2058 , e ) none of these
[EX A]: d

[EX Q]: Problem: a train running at the speed of 60 km / hr crosses a pole in 3 sec . what is the length of the train ?
Options: a ) 50 , b ) 75 , c ) 100 , d ) 120 , e ) 25
[EX A]:
a