Question

If the number of terms is 160

Answer 1

$\mathfrak \green{ \underline{ \underline{here \: is \: your \: answer : }}} \\ \mathfrak \blue{the \: numbers \: of \: terms \: is \: = 160} \\ \mathfrak{so..n = 160} \\ \mathfrak{ a_{n} = a + (n - 1)d } \\ \mathfrak{a_{160} = a + (160 - 1)d } \\ \mathfrak{a_{160} = a + 159d} \\ \mathfrak \red{ \underline {hope \: my \: answer \: will \: help \: you}}$