instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: if x is to be chosen at random from the set { 1 , 2 , 3 , 4 } and y is to be chosen at random from the set { 6 , 7 } , what is the probability that xy will be even ?
answer:
1 / 6


question:
Problem: if a - b = 6 and a 2 + b 2 = 50 , find the value of ab .
answer:
a ) 7


question:
Problem: at what rate percent per annum will a sum of money double in 6 years .
answer:

16.6