Mathematics - Permutation Combination Question with Solution | TestHub
MathematicsPermutation CombinationArrangement under ConstraintMedium2 minPYQ_2009
MathematicsMediumsingle choice
Paragraph:Let be the set of all symmetric matrices all of whose entries are either 0 or 1 . Five of these entries are 1 and four of them are 0 .Question:The number of matrices in is
Options:
Answer:
A
Solution:
Case When all three diagonal elements are 1 , then Number of matrices Case II When two diagonal elements are zero and one element is one no, then Number of matrices Total matrices
Stream:JEE_ADVSubject:MathematicsTopic:Permutation CombinationSubtopic:Arrangement under Constraint
⏱ 2mℹ️ Source: PYQ_2009
Doubts & Discussion
Loading discussions...