
Тест 8 нұсқа
Flashcard
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Арифметикалық прогрессияның n-ші мүшесінің формуласы неде?
Back
a_n = a_1 + (n-1)d, мұндағы a_1 - бірінші мүше, d - айырма.
2.
FLASHCARD QUESTION
Front
Арифметикалық прогрессияның сегізінші мүшесін есептеу үшін қандай мәліметтер қажет?
Back
Бірінші мүше (a_1) және айырма (d) қажет.
3.
FLASHCARD QUESTION
Front
a_n = n^2 - 5 формуласы бойынша алғашқы төрт мүшені табыңыз.
Back
-4; -1; 4; 11.
4.
FLASHCARD QUESTION
Front
17 оқушыдан екі кезекшіні таңдау тәсілдерінің санын қалай есептейміз?
Back
C(17, 2) = 136.
5.
FLASHCARD QUESTION
Front
Арифметикалық прогрессияда a_1 = -4; d = 6 болса, a_10 неге тең?
Back
50.
6.
FLASHCARD QUESTION
Front
a_n = (n+1)^2 формуласы бойынша үшінші мүшені табыңыз.
Back
16.
7.
FLASHCARD QUESTION
Front
Арифметикалық прогрессияның айырмасын қалай табамыз?
Back
Сегізінші мүшеден бірінші мүшені алып тастау арқылы: d = a_n - a_1.
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