Question

1. Decomponha os números a seguir.

a)120
b)144
c)168
d)225
e)117
f)125


2 Determine:

a) Os divisores de 60
b) Os divisores de 72
c) Os divisores comuns de 60 e 72
d) O maior desses divisores comuns.

Answer 1

a) 
$120/2=60/2=30/2=15/3=5/5=1 \\ 120=2*2*2*3*5$

b)
$144/2=72/2=36/2=18/2=9/3=3/3=1 \\ 144=2*2*2*2*3*3$

c)
$168/2=84/2=42/2=21/3=7/7=1 \\ 168=2*2*2*3*7$

d)
$225/3=85/5=17/17=1 \\ 255=3*5*17$

e)
$117/3=39/3=13/13=1 \\ 177=3*3*13$

f)
$125/5=25/5=5/5=1 \\ 125=5*5*5$

2)
a) 
$1-2-3-4-5-6-10-12-15-20-30-60$

b)
$1-2-3-4-6-12-18-24-36-72$

c)
$1-2-3-4-6-12$

d)
$12$