
геометрическая прогрессия
Authored by Алла Прокопович
Mathematics
9th Grade
Used 134+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Зная первые два члена геометрической прогрессии 1,6; 0,8;..., найдите следующие за ними три члена.
0,4; 0,2; 0,1
0,6; 0,4; 0,2
нет правильного
10; 12; 14
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
В геометрической прогрессии (b n ) известны
b1 = 16 и q = 2
Найдите b5 .
256
128
1
24
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Определите, какие из последовательностей являются геометрическими прогрессиями.
2; 2; 2; 2; ...
1; 3; 9; 27; ...
1; 4; 7; 10; ...
1; 1; 2; 3; ...
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Найдите первый член геометрической
прогрессии, в которой b6 = 1/27, q =1/3
9
1/6561
0
1
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Найдите знаменатель геометрической
прогрессии, если известно:
b3 =12, b5 = 48
2
36
18
я знаю, но не скажу!
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Найдите сумму первых пяти членов
геометрической прогрессии: 18, -6, 2,…
13 5/9
14 5/9
13 5/0
13
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Последовательность ( bn ) – геометрическая
прогрессия. Найдите S 4 если b1 = 2, q = -3
-40
40
80
-80
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