Question

Which term of the following ap is 360? 2,11 20,29

Answer 1

Answer:

a = 2

d = 11 - 2 = 9

an = 360

an = a + ( n - 1 ) d

360 = 2 + ( n - 1 ) 9

360 - 2 = 9n -9

358 + 9 = 9n

367 ÷ 9 = n

4. 999 = n

so 360 is nota term of ap