Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  CBSE XI  >>  Math  >>  Permutations and Combinations
0 votes

How many numbers of 6 digits can be formed from the digits of the number 112233?

$\begin{array}{1 1}(A)\;30\\(B)\;60\\(C)\;90\\(D)\;120\end{array} $

Can you answer this question?

1 Answer

0 votes
  • $n!=n(n-1)(n-2)(n-3).......(3)(2)(1)$
Total no. of digits =6
Total no. =112233
From 112233,the number of 6 digit that can be formed are
$\Rightarrow \large\frac{6!}{2!2!2!}$
$\Rightarrow \large\frac{6\times 5\times 4\times 3\times 2\times 1}{2\times 2 \times 2}$
$\Rightarrow 90$
Hence (C) is the correct answer.
answered Jun 20, 2014 by sreemathi.v

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App