nth term in an Arithmetic Sequence is given by :
✿ [tex]\mathsf{T_n = a + (n - 1)d}[/tex]
Where : a is the First term and d is the Common Difference
Given : First term (a) = 1 and Common Difference (d) = 5
[tex]\mathsf{\implies T_2_3 = 1 + (23 - 1)5}[/tex]
[tex]\mathsf{\implies T_2_3 = 1 + (22)5}[/tex]
[tex]\mathsf{\implies T_2_3 = 1 + 110}[/tex]
[tex]\mathsf{\implies T_2_3 = 111}[/tex]
So, The 23rd Term of the Arithmetic Sequence is 111
