
Вопросы по арифметической прогрессии
Quiz
•
Mathematics
•
11th Grade
•
Hard
Svetlana Kondrulina
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Найдите 10-й член арифметической прогрессии, если первый член равен 2, а разность равна 3.
30
29
27
26
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Какое значение имеет сумма первых 15 членов арифметической прогрессии с первым членом 5 и разностью 2?
285
258
257
275
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
В арифметической прогрессии a₁ = 7 и a₁₀ = 25. Найдите разность прогрессии.
3
4
6
2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Сколько первых членов арифметической прогрессии с первым членом 4 и разностью 6 нужно сложить, чтобы получить сумму 210?
7
4
8
6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Найдите первый член арифметической прогрессии, если разность равна 5, а сумма первых 10 членов равна 200.
-2
-2.5
-1.5
-0.5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
В арифметической прогрессии сумма первых n членов выражается формулой Sₙ = n(3n + 1). Найдите разность прогрессии.
6
2
3
9
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Третий член арифметической прогрессии равен 12, а седьмой член равен 24. Найдите первый член прогрессии.
9
6
3
1
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