Home Maths Quadratic Equations All Topic Question for Revision Test and are integers. If the A.M. of the roots…
Maths Quadratic Equations All Topic Question for Revision Test Single Correct MCQ
Published on: August 13, 2026

and are integers. If the A.M. of the roots of and G.M. of the roots of are equal, then

A
is an odd integer
B
is an even integer
C
is an even integer
D
is an odd integer

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Text Solution

Verified by Experts
The correct answer is:
C

Analyze the First Equation

For the quadratic equation , let its roots be and .

Sum of roots:

Arithmetic Mean (A.M.) of the roots:

Analyze the Second Equation

For the quadratic equation , let its roots be and .

Product of roots:

Geometric Mean (G.M.) of the roots:

Set Them Equal

According to the problem, the A.M. of the first equation equals the G.M. of the second:

Conclusion
Since is given to be an integer, is also an integer. Multiplying any integer by 2 always results in an even integer. Therefore, must be an even integer.

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