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Арифметическая прогрессия

Authored by Марк Алексеевич

Mathematics

9th Grade

Used 10+ times

Арифметическая прогрессия
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5 questions

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1.

FILL IN THE BLANK QUESTION

5 sec • 1 pt

6, 8, 10, ...

Назови первый член

2.

FILL IN THE BLANK QUESTION

5 sec • 1 pt

25, 21, 17, ...

Назови разность

3.

FILL IN THE BLANK QUESTION

5 sec • 1 pt

Записать первые пять членов АП, если

 a1=2, d=5a_1=2,\ d=5  

Образец: 2;10;24;36;45

4.

FILL IN THE BLANK QUESTION

5 sec • 1 pt

В АП найти 15-ый член, если 
 a1=2, d=3a_1=2,\ d=3  

5.

FILL IN THE BLANK QUESTION

5 sec • 1 pt

Запиши формулу n-го члена АП

1; 6; 11; 16; ...

Образец: an=3-4n

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