MCQ
The equation 2x + 5y = 7 has a unique solution, if x, y are:
- ARational numbers
- BReal numbers
- CNatural numbers
- DPositive real numbers
✓
Answer
- Natural numbers
Solution:
The equation 2x + 5y = 7 has a unique solution, if x, y are natural numbers.
In natural numbers, there exists only one pair (1, 1) which satisfies the given equation.
But for rational numbers, real numbers, positive real numbers, there exist many solution pairs to satisfy the equation.
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