Jawapan

2016-02-29T23:10:06+08:00
In order to get the common difference, take the 2nd (T2)term and minus it with the 1st term (T1). You can also do so by using the 3rd term (T3) and subtract he 2nd term( T2) Basically, to get the common difference, T2-T1, T3-T2, T4-T3