Answer:
neither arithmetic nor geometric
Step-by-step explanation:
An arithmetic sequence is a sequence in which each term is found by adding the same constant to each term. Looking at our sequence, to get from 3 to 4 we add 1; to get from 4 to 7 we add 3; and to get from 7 to 11 we add 4. This is not constant, so this is not arithmetic.
A geometric sequence is a sequence in which each term is found by multiplying each term by a constant. Looking at our sequence, to get from 3 to 4 we multiply by 4/3; to get from 4 to 7 we multiply by 7/4; to get from 11 to 7 we multiply by 11/7. These are not equivalent fractions, which means this is not a constant and not a geometric sequence.
Thus this is neither.
