Question

10, 100, 1000, 10000, 100000 … is ___.

• A. an arithmetic sequence
• B. a geometric sequence
• C. (a) and (b) above.
• D. None of the above

Answer 1

The correct option is B

a geometric sequence

The given sequence is 10, 100, 1000, 10000, 100000 …

Here in the above sequence, we observe that each term is 10 times the previous term

i.e. 10 $\times$ 10 = 100
100 $\times$ 10 = 1000
1000 $\times$ 10 = 10000

So the sequence is a geometric sequence.

If the consecutive terms were formed by adding a constant quantity with the preceding term, the sequence would have been arithmetic.