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

Q: Problem: three 7 faced dice are thrown together . the probability that all the three show the same number on them is ?

A: 1 / 49
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Q: Problem: a certain elevator has a safe weight limit of 2,000 pounds . what is the greatest possible number of people who can safely ride on the elevator at one time with the average ( arithmetic mean ) weight of half the riders being 200 pounds and the average weight of the others being 230 pounds ?

A: 9
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Q: Problem: how many zeroes are there at the end of the number n , if n = 70 ! + 140 ! ?

A:
16
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