Answer:
Explanation:
13,18,23 are in arithmetic progression
The formula for the nth term of an AP is, Tn = a + (n - 1)d, where: 'a' is the first term of the AP and; 'd' is the common difference of the AP.
here a=13, d=18-13=5
Tn = a + (n - 1)d = 13+(n-1)5 = 13+5n-5 = 5n+8
Tn = 5n+8