TASK DEFINITION: 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'.
PROBLEM: Problem: a train 441 m long can cross an electric pole in 21 sec and then find the speed of the train ? 
Options: a ) 88 kmph , b ) 89 kmph , c ) 76 kmph , d ) 16 kmph , e ) 18 kmph

SOLUTION: c

PROBLEM: Problem: if 21 lines are drawn in a plane such that no two of them are parallel and no three are concurrent , then in how many points do they intersect ? 
Options: a ) 150 , b ) 170 , c ) 190 , d ) 210 , e ) 230

SOLUTION: d

PROBLEM: Problem: x can do a piece of work in 40 days . he works at it for 8 days and then y finished it in 36 days . how long will y take to complete the work ? 
Options: a ) 45 , b ) 12 , c ) 15 , d ) 18 , e ) 20

SOLUTION:
a