NCERT Class X Chapter 5: Arithmetic Progression Exercise 5.1 Question 2 (iii)

Question:

Write first four terms of the AP, when the first term a and the common difference d are given as follows: a = 4,d=–3

Given:

First term (a) = 4
Common difference (d) = –3

To Find:

First four terms of the Arithmetic Progression (AP).

Formula:

The nth term of an AP is given by: a_n = a + (n – 1)d

Solution:

First term (a₁) = a = 4

Second term (a₂) = a + d = 4 + (–3) = 1

Third term (a₃) = a + 2d = 4 + 2(–3) = 4 – 6 = –2

Fourth term (a₄) = a + 3d = 4 + 3(–3) = 4 – 9 = –5

Result:

The first four terms of the AP are 4, 1, –2, –5.

Next question solution:

NCERT Class X Chapter 5: Arithmetic Progression Exercise 5.1 Question 2 (iv).

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