Question

How many numbers between 1 to 100 are divisible by 5?

Answer 1

Answer:

Step-by-step explanation:

Hope its help u. . . .

Answer 2

Arithmetic Progression (AP) is a numerical series in which the difference between any two subsequent numbers is always the same. Arithmetic Sequence is another name for it.

Find the numbers between 1 to 100 are divisible by 5.

So, the series are $5,10,15,20,25.......95$

So, the formula of AP is.

$a_{n} =a+(n-1)d$

where

$a=5\\d=10-5=5\\a_n=95$

$95=5+(n-1)5\\95=5+5n-5\\5n=95\\n=18$

So, the number between 1 to 100 are 18.