Which of the following is not an arithmetic sequence?
A: 4, 6, 11, 12, ...
B: 4, 6, 8, 10, ...
C: 5, 6, 7, 8, ...
D: 10, 20, 30, 40, ...

Question

Which of the following is not an arithmetic sequence?
A: 4, 6, 11, 12, ...
B: 4, 6, 8, 10, ...
C: 5, 6, 7, 8, ...
D: 10, 20, 30, 40, ...

primeralph · Answer

for an Arith. series, there is a common difference; meaning each term minus the previous is constant for any row. For example, in D: 20-10 = 10 and 30-20 =10, so it is an Arith. series.
Look for the option that doesn't do this

anonymous · Answer

for example, from 4 to 6 is an increase of 2, but from 6 to 11 is not

primeralph · Answer

@satellite73   you should not be stating answers explicitly

anonymous · Answer

why not i dont need help i need the answer it would be better if you explain why the answer is what it is.

primeralph · Answer

the rule says we should not post answers, not my decision.

anonymous · Answer

i dont read rules... awk.

primeralph · Answer

well, good luck with that. Hope you understand the stuff though.