Question

The common difference of A.P is 3 and the 24th term is 74 what is the first term

Answer 1

hope it's helpful,,,,,,,,,

Answer 2

let the first term be =a

the 24th term=74

so

74=a+(24-1)3

74=a+(23)3

74=a+69

a=74-69

a= 5