Question

Look at the following sequence. 21, 42, 126, 504, If it is geometric sequence, choose the common ratio. If it is not geometric sequence, choose “ not geometric “

Answer 1

Answer:

not geometric

Step-by-step explanation:

If the sequence is geometric then the common ratio r between consecutive terms should be equal

$\frac{42}{21}$ = 2

$\frac{126}{42}$ = 3

$\frac{504}{126}$ = 4

There is no common ratio between consecutive terms

Hence the sequence is not geometric