Сумма n членов арифметической прогрессии
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Максим Дубина
Used 32+ times
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10 questions
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1.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Вспомним... Дана последовательность чисел, представляющая собой арифметическую прогрессию:
3; 7; 11; ...; ...; ....
Запишите недостающие члены
11; 7; 3.
13; 17; 21.
15; 19; 23.
10; 21; 31.
2.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Вспомним... Из предложенных последовательностей выберите те, которые являются арифметическими прогрессиями.
4; 4; 4; 4; 4; 4; ...; ...;
4; 8; 16; 32; 64; 128; ...; ...;
4; 8; 12; 16; 20; 24; ...; ...;
1; 4; 9; 16; 25; 36; ...; ...;
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Вспомним... Для арифметической прогрессии an: -7; -2; 3; 8; 13; ... Найдите a101
493
106
1234
777
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Первый член арифметической прогрессии равен 2, а пятый равен 10. Какой из предложенных формул будет описываться данная последовательность?
5.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Задана последовательность чисел 1; 2; 3; 4; 5; 6; 7; 8; 9; 10. Найдите сумму всех членов этой последовательности
100
55
33
70
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Арифметическая прогрессия , найдите
2519
83
860
900
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Арифметическая прогрессия , найдите сумму всех членов прогрессии с 15-го по 30-й включительно.
30
750
800
960
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