Question

which of the following is not an ap
1. 2,2,2,2......
2. 10,7,4....
3. 23,21,18,14....
4. 2,7,12...​

Answer 1

Answer:

2

Step-by-step explanation:

this this will be the appropriate answer

Answer 2

$\huge\mathfrak\blue{Answer:-}$.

Option 1 >>> As the common difference is 2-2 = 0 , ans 0 can't be in AP