Question 1048005


{{{-2}}}, {{{3}}}, {{{8}}}, {{{13}}}, {{{18}}}, {{{highlight(63)}}}, it must be {{{highlight(23)}}} 

as you can see, to get {{{3}}} you add {{{5}}} to {{{-2}}}
to get {{{8}}} you add {{{5}}} to {{{3}}}
to get {{{13}}} you add {{{5}}} to {{{8}}}

and the difference between each pair of terms is {{{d=5}}}


The formula for the general term of an arithmetic sequence is: 
{{{a[n] = a[1] + (n-1)d}}}.......since first term is {{{a[1]=-2}}} and common difference is {{{d=5}}}, we have

{{{a[n] = -2 + 5(n-1)}}}