The task is to generate the correct answer for a given math problem.

Q: Problem: a group of men decided to do a work in 55 days , but 15 of them became absent . if the rest of the group did the work in 60 days , find the original number of men ?

A: 180
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Q: Problem: find the greatest number that will divide 205 , 626 and 588 leaving 5 , 6 and 8 as remainders respectively

A: 2
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Q: Problem: how many positive even integers less than 100 contain digits 5 or 7 ?

A:
10
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