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Question
The equation 2x + 5y = 7 has a unique solution, if x, y are ______.
Options
Natural numbers
Positive real numbers
Real numbers
Rational numbers
Solution
The equation 2x + 5y = 7 has a unique solution, if x, y are natural numbers.
Explanation:
In natural numbers, there is only one pair i.e., (1, 1) which satisfy the given equation.
Therefore, if x, y are natural numbers, given equation has a unique solution.
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