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Functions — Maths STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 ScienceMathsFunctions2 Marks
MCQ
Number of bijective function from a set of 10 elements to itself is
  • A
    5!
  • ✓
    10!
  • C
    15!
  • D
    8!
✓

Answer

Correct option: B.
10!
(B)
The number of bijections from a finite set A onto a finite set B is
$n ( A )!; \quad$ if $n ( A )= n ( B )$
0 ;$\quad$ otherwise
the number of bijective function from a set of 10 elements to itself $=10$ !

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