A) 15
B) 9
C) 7
D) 8
Correct Answer: C
Solution :
For real roots, discriminant \[\ge 0\] \[\Rightarrow {{q}^{2}}-4p\ge 0\,\,\Rightarrow \,\,{{q}^{2}}\ge 4p\] For \[p=1,{{q}^{2}}\ge 4\,\,\,\Rightarrow q=2,3,4\] \[p=2,{{q}^{2}}\ge 8\,\,\,\,\Rightarrow q=3,4\] \[p=3,{{q}^{2}}\ge 12\,\,\,\,\Rightarrow q=4\] \[p=4,{{q}^{2}}\ge 16\,\,\,\,\Rightarrow q=4\] Total seven solutions are possible.You need to login to perform this action.
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