Question

9. 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

Answer:

2 , 3 or 7

Step-by-step explanation:

Total beads = 84

Number of Beads in each row  = P   ( prime Number)

Number Of Rows  =  R

84  =  1  * 84    

84 = 2 * 42

84 = 3 * 28

84 = 4 * 21

84 = 6 * 14

84 = 7 * 12

only prime numbers here are   2 , 3  & 7

Number of Beads in a row can be

2 , 3 or 7