What is the next number in the sequence?

An arithmetic sequence begins as follows:

Give the tenth term of this sequence.

A geometric sequence has as its first and third terms and 24, respectively. Which of the following could be its second term?

The first and third terms of a geometric sequence are 3 and 108, respectively. All What is the sixth term?

A geometric sequence begins as follows:

Give the next term of the sequence.

The first and third terms of a geometric sequence comprising only positive elements are and , respectively. In simplest form, which of the following is its second term?

A geometric sequence begins as follows:

Express the next term of the sequence in simplest radical form.

The second and third terms of a geometric sequence are and , respectively. Give the first term.

The first two numbers of a sequence are, in order, 1 and 4. Each successive element is formed by adding the previous two. What is the sum of the first six elements of the sequence?

The first and third terms of a geometric sequence are 2 and 50, respectively. What is the seventh term?