Question

In how many ways 4 rings of different types can be worn in 3 fingers? (repetition allowed)

• A. 49
• B. 12
• C. 24
• D. 81

Answer 1

The correct option is D 81

First ring can be worn in any of the 3 fingers similarly second, third and fourth ring can be worn in any of the three fingers.
$\therefore$ 4 rings can be worn in $3\times 3\times 3\times 3=81ways$.