Adv
AnilSinghBora
  • 0
Guru

Choose the correct choice in the following and justify:(ii) 11th term of the A.P. -3, -1/2, ,2 …. is (A) 28 (B) 22 (C) – 38 (D) Q.2(2)

  • 0

What is the best way to the question of arithmetic progressions of ncert of exercise 5.2 for class 10th. Please give me best solution for this question. Choose the correct choice in the following and justify:(ii) 11th term of the A.P. -3, -1/2, ,2 …. is (A) 28 (B) 22 (C) – 38 (D)

Share

1 Answer

  1. Given here,

    A.P. = -3, -1/2, ,2 …

    Therefore, we can find,

    First term a = – 3

    Common difference, d = a2 − a1 = (-1/2) -(-3)

    ⇒(-1/2) + 3 = 5/2

    As we know, for an A.P.,

    an = a+(n−1)d

    Putting the values;

    a11 = 3+(11-1)(5/2)

    a11 = 3+(10)(5/2)

    a11 = -3+25

    a11 = 22

    Hence, the answer is option B.

    • 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.

Related Questions