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Mathematics Quiz on Sequences and Series
Class XI
Mathematics
Sequences and Series
10 questions
MEDIUM
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Preview questions
1. What is the general term of an arithmetic sequence?
a_n = a + (n-1)d · a_n = a + nd · a_n = a + (n+1)d · a_n = a - (n-1)d
2. If the first term of an arithmetic series is 5 and the common difference is 3, what is the 10th term?
32 · 27 · 35 · 30
3. What is the sum of the first n terms of an arithmetic series?
S_n = n/2 * (2a + (n-1)d) · S_n = n * (a + d) · S_n = n * a + d · S_n = n/2 * (a + d)
4. In a geometric sequence, if the first term is 2 and the common ratio is 3, what is the 4th term?
54 · 18 · 24 · 81
5. What is the formula for the nth term of a geometric sequence?
a_n = ar^(n-1) · a_n = ar^n · a_n = a + (n-1)r · a_n = a + nr
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