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Polynomial Expressions

Question 2The...

Question

Question 2
The equation 2x + 5y = 7 has a unique solution, if x and y are:

A) Natural numbers
B) Positive real numbers
C) Real numbers
D) Rational numbers

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Solution

The answer is A.
In natural numbers, there is only one pair i.e (1,1) which satisfy the given equation.
But, in real numbers and rational numbers, there are many pairs to satisfy the given linear equation.

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