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

[EX Q]: Problem: in the third grade of windblown school there are 90 students , one third of them failed the math test and 1 / 6 failed that literature test . at least how many students failed both tests ? 
Options: a ) 0 . , b ) 6 . , c ) 8 . , d ) 10 . , e ) 12 .
[EX A]: a

[EX Q]: Problem: three numbers are in the ratio 1 : 4 : 6 and their h . c . f is 9 . the numbers are : 
Options: a ) 1 , 4,6 , b ) 12 , 24,36 , c ) 10 , 20 , 30 , d ) 12 , 24 , 36 , e ) 9 , 36,54 .
[EX A]: e

[EX Q]: Problem: if log 2 = 0.3010 and log 3 = 0.4771 then the value of log 4.5 is : 
Options: a ) 0.6532 , b ) 0.7727 , c ) 0.3266 , d ) 0.3796 , e ) none of these
[EX A]:
a