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Jee Main 2025Medium JEE math MCQ

Let the position vectors of three vertices of a triangle be \(4\mathbf{p} + \mathbf{q} - 3\mathbf{r}, -5\mathbf{p} + \mathbf{q} + 2\mathbf{r}\) and \(2\mathbf{p} - \mathbf{q} + 2\mathbf{r}\). If the position vectors of the orthocenter and the circumcenter of the triangle are \(\frac{5\mathbf{p} + 2\mathbf{q} + 3\mathbf{r}}{14}\) and \(\alpha\mathbf{p} + \beta\mathbf{q} + \gamma\mathbf{r}\) respectively, then \(\alpha + 2\beta + 5\gamma\) is equal to
  1. A. 3
  2. B. 4
  3. C. 1
  4. D. 6

Solution

The correct option is **A**. (A. 3)

MATH

mediumPYQ Reworded
Question
Read carefully, then pick the best option.
Let the position vectors of three vertices of a triangle be 4p+q3r,5p+q+2r4\mathbf{p} + \mathbf{q} - 3\mathbf{r}, -5\mathbf{p} + \mathbf{q} + 2\mathbf{r} and 2pq+2r2\mathbf{p} - \mathbf{q} + 2\mathbf{r}. If the position vectors of the orthocenter and the circumcenter of the triangle are 5p+2q+3r14\frac{5\mathbf{p} + 2\mathbf{q} + 3\mathbf{r}}{14} and αp+βq+γr\alpha\mathbf{p} + \beta\mathbf{q} + \gamma\mathbf{r} respectively, then α+2β+5γ\alpha + 2\beta + 5\gamma is equal to
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