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

Q: Problem: how many different positive integers are factors of 64 ? 
Options: a ) 10 , b ) 12 , c ) 14 , d ) 16 , e ) 18

A: d
****
Q: Problem: in a class of 87 students 41 are taking french , 22 are taking german . of the students taking french or german , 9 are taking both courses . how many students are not enrolled in either course ? 
Options: a ) 6 , b ) 15 , c ) 24 , d ) 33 , e ) 54

A: d
****
Q: Problem: ratio between rahul and deepak is 4 : 3 , after 6 years rahul age will be 26 years . what is deepak present age ? 
Options: a ) 22 , b ) 15 , c ) 77 , d ) 266 , e ) 182

A:
b
****