The volume of the tetrahedron whose vertices are the points with position vectors ,

MATHEMATICS · Subjective · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

The volume of the tetrahedron whose vertices are the points with position vectors

\hat{i} + \hat{j} + \hat{k}

-\hat{i} - 3\hat{j} + 7\hat{k}

\hat{i} + 2\hat{j} - 7\hat{k}

and

3\hat{i} - 4\hat{j} + \lambda\hat{k}

is 22, then the digit at unit place of

\lambda

is.