Question

Which term of the progression 5,8,11,14,............is 320

Answer 1

a = 5. d = 3
Tn = 5+ (n-1) 3
Tn= 5 + 3n- 3
n = 2+3n

320 = 2+ 3n
320-2 = 2+3n -2
318/3 =3 n /3
n = 106
320 is = 106 th

Answer 2

Here is your answer.....

hope it help you ✌✌✌✌✌