Question

14) Find the common difference and 8th term of the A.P. : 4, 1, -2, -5 …………​

Answer 1

$\huge\bf\red{Solution}$

Given that

☞ first term a = 4

☞ common difference d = 1 - 4 = -3

☞ nth term = 8

Then according to the question:-

an = a + (n - 1)d

a8 = 4 + (8 - 1) ×(-3)

a8 = 4 + 7 × (-3)

a8 = 4 - 21

a8 = 17

Step-by-step explanation:

Answer 2

Step-by-step explanation:

Given that

☞ first term a = 4

☞ common difference d = 1 - 4 = -3

☞ nth term = 8

Then according to the question:-

an = a + (n - 1)d

a8 = 4 + (8 - 1) ×(-3)

a8 = 4 + 7 × (-3)

a8 = 4 - 21

a8 = 17

Step-by-step explanation:

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