In this task, you need to provide the correct option for a given problem from the provided options.

[EX Q]: Problem: the hcf of two numbers is 42 and the other two factors of their lcm are 10 and 20 . what is the largest number .
Options: a ) 462 , b ) 450 , c ) 840 , d ) 504 , e ) 555
[EX A]: c

[EX Q]: Problem: how many factors of 2475 are odd numbers greater than 1 ?
Options: a ) 3 , b ) 4 , c ) 17 , d ) 6 , e ) 7
[EX A]: c

[EX Q]: Problem: in a graduating class of 232 students , 144 took geometry and 119 took biology . what is the difference between the greatest possible number w and the smallest possible number of students that could have taken both geometry and biology ?
Options: a ) 144 , b ) 119 , c ) 113 , d ) 88 , e ) 31
[EX A]:
d