W ciągu arytmetycznym dane są a1=5 oraz a30=9. Wtedy S30 wynosi
suma wyrazów w ciągu arytmetycznym

Quiz
•
Mathematics
•
8th - 10th Grade
•
Easy
Jerzy Buczma
Used 8+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1890
210
225
270
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dany jest ciąg arytmetyczny an= 3n+5.
Oblicz sumę piętnastu początkowych wyrazów tego ciągu.
435
870
400
565
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Dany jest ciąg arytmetyczny an= -2n+4 Oblicz S20
-250
-340
-36
-680
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Oblicz sumę wszystkich liczb dwucyfrowych
4900
5000
4800
4905
5.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Oblicz sumę wszystkich liczb parzystych mniejszych od 100
50*49
2500
2450
3000
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