The task is to generate the correct answer for a given math problem.
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Question: Problem: 2,7 , 17,3 , 11,19 , 5,13 , __

Answer: 23


Question: Problem: of the diplomats who attended a summit conference : 20 spoke japanese , 32 did not speak russian and 20 % of the diplomats spoke neither japanese nor russian . if 10 % of the diplomats spoke both japanese and russian , then how many diplomats attended the conference ?

Answer: 120


Question: Problem: a train crosses a bridge of length 1500 m in 70 seconds and a lamp post on the bridge in 20 seconds . what is the length of the train in metres ?

Answer:
600 m