Question

In how many ways can $6$ different rings can be put on $5$ fingers with at least one ring on each finger

• A. $2400$
• B. $3600$
• C. $1440$
• D. $7200$

Answer 1

The correct option is B $3600$

Each finger should have at least $1$ ring on it and they can also arrange among themselves.

${}^6{C}_5\times 5!=720$

Remaining one can be placed in $5$ ways.

Total $=720\times 5=3600$