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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