Question

the common difference of arithmetic progression - 1 - 7 - 13 ........ is _______​

Answer 1

Answer:

The common difference is -7 -(-1) = -6 for this AP.

Step-by-step explanation:

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Answer 2

Answer:

if the question is-1,-7,-13 the common difference (d)= -6 or if the question is -1,7,13 then common difference is 8