Adv
Deepak Bora
  • 0

Which term of the AP 3,8,13,18, ….. will be 55 more than its 20th term?

  • 0

An Important Question of RS Aggarwal book Based on Arithmetic Progression For ICSE & CBSE Board
Question Number 19 of Exercise 11A of RS Aggarwal Solution
Here the AP is given. you have to find which term of the given AP is more than its nth term

Share

Related Questions

Adv

1 Answer

  1. Given AP is 3, 8, 13, 18,…
    First term = a = 3
    Common difference = d = 8 – 3 = 5
    And n = 20 and a_20 be the 20th term, then
    a_20 = a + (n – 1)d
    = 3 + (20 – 1) 5
    = 3 + 95
    = 98
    The required term = 98 + 55 = 153
    Now, 153 be the nth term, then
    a_n = a + (n – 1)d
    153 = 3 + (n – 1) x 5
    153 – 3 = 5(n – 1)
    150 = 5(n – 1)
    n – 1 = 30
    n = 31
    Required term will be 31st term.

    • 0
Leave an answer

Leave an answer

Browse

Choose from here the video type.

Put Video ID here: https://www.youtube.com/watch?v=sdUUx5FdySs Ex: "sdUUx5FdySs".

Captcha Click on image to update the captcha.