Mathematics - Permutation & Combination Question with Solution | TestHub

MathematicsPermutation & CombinationDivision of Identical itemsEasy2 minQB

MathematicsEasysingle choice

The position vector of a point P is $r = x i + y j + z k$ , where

Answer:

Solution:

$r \cdot a = 10 \Rightarrow x + y + z = 10$

Number of positive integral solution of above equation = Coeff . of $x^{10}$ in $(x + x^{2} + x^{3} + \dots\dots)^{3} = 36$

Stream:JEESubject:MathematicsTopic:Permutation & CombinationSubtopic:Division of Identical items

⏱ 2mℹ️ Source: QB

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