07.07.2015 Views

Matemática

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0 1 2 3<br />

b) C C C <br />

7 8 9<br />

C10<br />

c)<br />

<br />

<br />

<br />

10<br />

7<br />

10<br />

11<br />

12<br />

<br />

8 9 10<br />

13<br />

<br />

10<br />

x<br />

<br />

y<br />

3. Sabendo que 28<br />

x <br />

e 56<br />

y 1<br />

x 1<br />

, calcule o valor de .<br />

y 1<br />

4. Se um número natural n é tal que<br />

10<br />

10<br />

11<br />

12 <br />

, então n é:<br />

2<br />

5 6 7 n<br />

2<br />

a) igual a 6 ou – 6<br />

b) um número par<br />

c) um quadrado perfeito<br />

d) divisor de 15<br />

170

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