Six distinct badges are arranged in a row. A pupil multiplies 6 x 5 x 4 x 3 x 2 and says a factor ha

Question

Six distinct badges are arranged in a row. A pupil multiplies 6 x 5 x 4 x 3 x 2 and says a factor has been omitted. Explain whether their numerical count is wrong and find the correct number of rows.

Accepted Answer

$720$; the omitted factor is $1$, so the count is correct.

The final remaining badge

The final remaining badge

Solution:

Solution locked