Question

How do you calculate the common difference?

second term minus first term
second term minus first term

first term minus second term
first term minus second term

first term divided by second term
first term divided by second term

second term divided by first term
second term divided by first term

Answer 1

second term minus first term

Explanation:

Difference is a result of subtracting (not dividing!)

To calculate difference between two terms we have to subtract the previous from the next:

`d=a_2-a_1=a_3-a_2=a_4-a_3=...=a_n-a_(n-1)`