Question

In how many ways can 3 distinct rings be worn on five fingers of right hand?

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

Since, 3 rings are worn on five fingers of right hand.

Each ring can be worn to 5 fingers in 5 ways

So, given activity can be re written as "wear first ring AND wear second ring AND wear third ring”

So, Number of ways in which 3 distinct rings can be worn $=5\times 5\times 5.$

It can be done in $5^3$ ways.