Question

Patan uses a bead loom to make a bracelet.

She wants to use all 84 beads, and to put the beads in rows of equal length.
Patan also wants the number of beads in each row to be a factor of 84 that is a prime number.
How many beads could Patan put in each row? Give as many answers as you can.
Explain how you found the numbers.

Answer 1

Explanation:

factors of 84 = 2* 2 * 3 * 7

1) 21 *4 ===> 21 beads , 4 rows

2) 14 * 6 ===> 14 beads , 6 rows

3) 12 * 7 ===> 12 beads, 7 rows