Question 346700
Hint: To get {{{a[2]}}}, simply add the difference 'd' onto {{{a[1]}}}. So {{{a[2]=a[1]+d=3/4+1/4=(3+1)/4=4/4=1}}}. So {{{a[2]=1}}}. To get {{{a[3]}}}, add 'd' onto {{{a[2]}}} and repeat. Keep going until you hit {{{a[5]}}}