Question

Question 2.

What are the first five terms of the following sequence?

a1 = 25, an = an – 1 – 5

5, 10, 15, 20, 25
25, 5 ,1 , 1/5,1/25
25, 20, 15, 10, 5
25, 30, 35, 40, 45

Answer 1

Answer: 25, 20, 15, 10, 5.

Explanation:

The first five terms of the sequence are:

25, 20, 15, 10, 5.

To find the nth term, we use the formula:

an = an-1 - 5

Starting with a1 = 25:

a2 = a1 - 5 = 25 - 5 = 20

a3 = a2 - 5 = 20 - 5 = 15

a4 = a3 - 5 = 15 - 5 = 10

a5 = a4 - 5 = 10 - 5 = 5

So, the first five terms are 25, 20, 15, 10, 5.