5,11,17,23(A.P.) find the general term T(n),係唔係T(n)=5=(n-1)(6) or T(n)=6n-1 兩種寫法都ok?

Right
T(n)=6n-1
T(1)=6(1)-1=6
T(2)=6(2)-1=11
T(3)=6(3)-1=17
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Wrong
T(n)=n-1
T(1)=1-1=0 (wrong)
T(2)=2-1=1 (wrong)
T(3)=3-1=2 (wrong)
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