Question

There are 87 beads. How many necklaces of 9 beads each can be made and how many beads will be left over?
$87 \div 9$
​

Answer 1

Answer:

9 necklaces can be made and 6 beads will be left over.

Step-by-step explanation:

There are total 87 beads.

Answer 2

Total no. of beads = 87

In the case of necklace, there is no distinction between the clockwise and anticlockwise arrangements, then the required number of circular permutations

=

2×12

18 P /12

= 6!×18/ 24

= 6×5×4×3×2×1×24/18×17×16×15×14×13!

= 2/119×13