If $\overline{\mathrm{a}}, \overline{\mathrm{b}} ,\overline{\mathrm{c}}$  are non-coplanar vectors and $(\overline{\mathrm{a}} + 2\overline{\mathrm{b}} +\overline{\mathrm{c}})·(\overline{\mathrm{a}}-\overline{\mathrm{b}})\mathrm{x}(\overline{\mathrm{a}}- \overline{\mathrm{b}} - \overline{\mathrm{c}}) = \mathrm{\lambda }[\overline{\mathrm{a}} \overline{\mathrm{b}} \overline{\mathrm{c}}]$ then $\mathrm{\lambda }=$

best study material, now at your finger tips!

• 

  live classes

• 

  progress tracking

• 

  24x7 mentored guidance

• 

  study plan analysis

download the app