Answer:
23.8
Step-by-step explanation:
Since there's a decimal period, you just count three numbers from left to right.
is infinite set... because dots meaning non stop
The prime factors of 15 are: 1,3,5,15
The prime factors of 21 are: 1,3,7,21
The prime factors of 38 are: 1,3,13,39
The prime factor of 42 is : 1,2,3,6,7,14,21,42
