The seventh term is 23.
Step-by-step explanation:
- Step 1: This is an Arithmetic Progression 11, 13, 15...
Given, First term, a = 11
- Step 2: Find Common difference, d =
13 - 11 = 2
- Step 3: Formula for nth term in an AP, a(n) = a + (n-1) d
- Step 4: Substitute for 7th term, a(7) = 11 + (7 - 1) 2
= 11 + (6*2)
= 11 + 12 = 23
