A point P lies on the line joining A(1, 2, 3) and B(2, 10, 1). If z-coordinate of P is 7, what is the sum of other two coordinates?

NDA 2023 Mathematics question

A point lies on the line joining and . If -coordinate of is 7, what is the sum of other two coordinates?

Answer: (A)

Direction ratios of : . A general point on the line is .

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Question ID VK-029751