If both p and q belong to the set 1, 2, 3, 4 , then how many equations of the form px^2+qx+1=0 will have real roots?

NDA 2019 Mathematics question

If both p and q belong to the set , then how many equations of the form will have real roots?

Answer: (C)

Real roots need . : no . : (1 equation). : ,

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Question ID VK-029052