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

Q: Problem: in a village of 2,500 people , 800 people are over 70 years old and 850 people are female . it is known that 40 percent of the females are younger than 70 years old . if no one in the village is 70 years old , what is the probability that a person chosen at random is either a male or younger than 70 years old ?

A: 199 / 250
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Q: Problem: find the least number must be subtracted from 105829 so that remaining no . is divisible by 21 ?

A: 10
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Q: Problem: john can complete a given task in 18 days . jane will take only 12 days to complete the same task . john and jane set out to complete the task by beginning to work together . however , jane was indisposed 6 days before the work got over . in how many days did the work get over from the time john and jane started to work on it together ?

A:
54 / 5
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