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

Q: Problem: if a = 105 and a ^ 3 = 21 × 25 × 45 × z , what is the value of z ?

A: 49
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Q: Problem: income and expenditure of a person are in the ratio 7 : 6 . if the income of the person is rs . 14000 , then find his savings ?

A: 2000
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Q: Problem: martha has the unique talent of being able to guess other people ’ s height and weight . for every 6 people that martha meets , she consistently guesses the people ’ s correct height 5 times , and for every 8 people that she meets , she consistently guesses the people ’ s correct weight 6 times . if martha meets 3 people and her success rate remains constant , what is the probability that martha correctly guesses a person ’ s weight and height at least once ?

A:
485 / 512
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