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Sequences and series

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The first term of an arithmetic progression is $1$ and its common difference is $5$ . What is the sum of its first $16$ terms?
The first term of an arithmetic progression is $3$ and its common difference is $4$ . What is the sum of its first $16$ terms?
The first term of an arithmetic progression is $3$ and its common difference is $6$ . What is the sum of its first $15$ terms?
The first term of an arithmetic progression is $6$ and its common difference is $5$ . What is the sum of its first $13$ terms?
The first term of an arithmetic progression is $9$ and its common difference is $3$ . What is the sum of its first $14$ terms?
The first term of an arithmetic progression is $2$ and its common difference is $6$ . What is the sum of its first $14$ terms?
What is the sum to infinity of the geometric series $6 + 3/2 + 3/8 + \dots$ ?
What is the sum to infinity of the geometric series $3 + 3/4 + 3/16 + \dots$ ?
What is the sum to infinity of the geometric series $6 + 2 + 2/3 + \dots$ ?
The first term of an arithmetic progression is $1$ and its common difference is $4$ . What is the sum of its first $20$ terms?
The first term of an arithmetic progression is $3$ and its common difference is $6$ . What is the sum of its first $8$ terms?
The first term of an arithmetic progression is $2$ and its common difference is $5$ . What is the sum of its first $9$ terms?
The first term of an arithmetic progression is $8$ and its common difference is $4$ . What is the sum of its first $12$ terms?
The first term of an arithmetic progression is $8$ and its common difference is $5$ . What is the sum of its first $12$ terms?
The first term of an arithmetic progression is $4$ and its common difference is $6$ . What is the sum of its first $15$ terms?
What is the sum to infinity of the geometric series $12 + 8 + 16/3 + \dots$ ?
The first term of an arithmetic progression is $1$ and its common difference is $6$ . What is the sum of its first $13$ terms?
The first term of an arithmetic progression is $1$ and its common difference is $2$ . What is the sum of its first $12$ terms?
The first term of an arithmetic progression is $6$ and its common difference is $4$ . What is the sum of its first $13$ terms?
The first term of an arithmetic progression is $3$ and its common difference is $6$ . What is the sum of its first $14$ terms?
The first term of an arithmetic progression is $9$ and its common difference is $5$ . What is the sum of its first $17$ terms?
The first term of an arithmetic progression is $2$ and its common difference is $6$ . What is the sum of its first $19$ terms?
The first term of an arithmetic progression is $7$ and its common difference is $2$ . What is the sum of its first $19$ terms?
The first term of an arithmetic progression is $2$ and its common difference is $4$ . What is the sum of its first $14$ terms?
The first term of an arithmetic progression is $8$ and its common difference is $4$ . What is the sum of its first $9$ terms?
The first term of an arithmetic progression is $6$ and its common difference is $4$ . What is the sum of its first $14$ terms?
The first term of an arithmetic progression is $7$ and its common difference is $6$ . What is the sum of its first $17$ terms?
What is the sum to infinity of the geometric series $8 + 8/3 + 8/9 + \dots$ ?
The first term of an arithmetic progression is $9$ and its common difference is $2$ . What is the sum of its first $20$ terms?
The first term of an arithmetic progression is $9$ and its common difference is $6$ . What is the sum of its first $10$ terms?
The first term of an arithmetic progression is $9$ and its common difference is $2$ . What is the sum of its first $14$ terms?
The first term of an arithmetic progression is $6$ and its common difference is $2$ . What is the sum of its first $12$ terms?
The first term of an arithmetic progression is $6$ and its common difference is $5$ . What is the sum of its first $9$ terms?
What is the value of $n = 1 \sum \infty \frac{3 n + 1}{n ( n + 1 ) ( n + 2 )}$ ?
What is the value of $n = 1 \sum \infty \frac{n ^{2}}{3 ^{n}}$ ?
The sum of the infinite series $n = 1 \sum \infty \frac{n}{n ^{4} + n ^{2} + 1}$ is
What is the sum to infinity of the geometric series $8 + 2 + 1/2 + \dots$ ?
What is the sum to infinity of the geometric series $6 + 4 + 8/3 + \dots$ ?
What is the sum to infinity of the geometric series $4 + 8/3 + 16/9 + \dots$ ?
What is the sum to infinity of the geometric series $8 + 16/3 + 32/9 + \dots$ ?
What is the sum to infinity of the geometric series $2 + 4/3 + 8/9 + \dots$ ?
What is the sum to infinity of the geometric series $6 + 3 + 3/2 + \dots$ ?
What is the sum to infinity of the geometric series $2 + 1/2 + 1/8 + \dots$ ?
What is the sum to infinity of the geometric series $8 + 4 + 2 + \dots$ ?
What is the sum to infinity of the geometric series $2 + 1 + 1/2 + \dots$ ?
What is the sum to infinity of the geometric series $4 + 2 + 1 + \dots$ ?

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