Question

given A.P is 5, 2, -1, -4 last number is given by

a)2n+5
b)8-3n
c)2n-5
d)3n-8​

Answer 1

Answer:

(b)8-3n

Step-by-step explanation:

Ap=a+(n-1)d

a=5 , d=2-5=-3

substituting the value

Ap=5+(n-1)(-3)

Ap=5-3n+3

Ap=8-3n

Answer 2

Answer:

an = a + (n-1) × d

an = 5 + (n-1) × -3

an. = 5 - 3n +3

AN= 8-3n

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