In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Q: Problem: a man has some hens and cows . if the number of heads be 60 and the number of feet equals 200 , then the number of hens will be : 
Options: a ) 22 , b ) 25 , c ) 24 , d ) 20 , e ) 28

A: d
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Q: Problem: the greatest number which on dividing 1657 and 2037 leaves remainders 10 and 7 respectively , is : 
Options: a ) 123 , b ) 1 , c ) 235 , d ) 305 , e ) 505

A: b
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Q: Problem: what is the sum of all 3 digit integers formed using the digits 34 and 5 ( repetition is allowed ) 
Options: a ) 11982 , b ) 11984 , c ) 11985 , d ) 11988 , e ) 11986

A:
d
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