A) 4
B) 2
C) 5
D) 3
Correct Answer: D
Solution :
For rational D must be perfect square \[D=121-24\alpha \] for \[121-24\alpha \] to be perfect square a must be \[3,\text{ }4,\text{ }5\] So, ans \[a=3\] For rational D must be perfect square \[D=121-24\alpha \] for \[121-24\alpha \] to be perfect square a must be \[3,\text{ }4,\text{ }5\] So, ans \[a=3\]You need to login to perform this action.
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