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

Q: Problem: a tyre has two punctures . the first puncture alone would have made the tyre flat in 9 minutes and the second alone would have done it in 6 minutes . if air leaks out at a constant rate , how long does it take both the punctures together to make it flat ?

A: 335 min
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Q: Problem: a , b , c , d , e , f , g , h sitting in a row what is the probability that a , b , c sitting together ?

A: 3 / 28
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Q: Problem: if two dice are thrown together , the probability of getting an even number on both dice is

A:
1 / 4
****