Browse Questions

# Five digit numbers are formed using the digits 0,1,2,3,4. Out of these numbers in how many numbers at least one number is repeated?

$\begin{array}{1 1} 96 \\ 120 \\ 2500 \\ 2404 \end{array}$

$4\times 5\times 5\times 5\times 5=2500$
$4\times 4\times 3\times 2\times 1=96$