
Sequências 2
Authored by Oscar Rodrigues
Mathematics
6th Grade
Used 37+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Considera a sequência: 5; 8; 11; 14; 17; ...
Qual dos seguintes números é termo da sequência?
24
25
26
27
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Considera a sequência: 1, 1, 2, 3, 5, 8, 13, ...
Qual é a lei de formação da sequência?
Seleciona a resposta correta.
Somar 1 ao termo imediatamente anterior.
Somar os 2 termos imediatamente anteriores.
Multiplicar o termo anterior por 2 e subtrair 1.
Multiplicar o termo anterior por 3 e subtrair 2.
3.
FILL IN THE BLANK QUESTION
45 sec • 1 pt
Observa a sequência de figuras e responde à questão.
Quantos quadrados serão utilizados na construção da figura com 17 triângulos?
Indica apenas o valor numérico.
4.
FILL IN THE BLANK QUESTION
45 sec • 1 pt
Considera a seguinte sequência e responde à questão.
12 = 1
112 = 121
1112 = 12321
11112 = 1234321
111112 = a
Qual é o valor de a?
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Considera a sequência seguinte:
12 = 1
22 = 1 + 3
32 = 1 + 3 + 5
42 = 1 + 3 + 5 + 7 ...
a2 = 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23 + 25
Qual é o valor de a?
5
25
13
12
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
A Ana construiu a sequência que se encontra na figura.
Qual das seguintes expressões corresponde ao termo geral da sequência?
2n
n+3
n
Answer explanation
A 1.ª figura tem 1 quadrado: 1=12 .
A 2.ª figura tem 4 quadrados: 4=22 .
A 3.ª figura tem 9 quadrados: 9=32 ...
A figura de ordem n tem n2 quadrados.
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Considera a sequência 2 + 3n2.
Quais são os três primeiros termos desta sequência?
5; 14; 29.
5; 14; 20.
2; 23; 233.
2; 5; 7.
Answer explanation
1.º termo: 2+3×12=2+3×1=5
2.º termo: 2+3×22=2+3×4=14
3.º termo: 2+3×32=2+3×9=29
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