Question

Find how many three digit natural numbers are divisible by 5.​

Answer 1

Answer:

Three digit number are 100,105.........995

a=100                            (a= first term)

d=105−100=5         (d=common difference)

⇒a  

n

​  

=a+(n−1)d

⇒995=100+(n−1)5

⇒995−100=(n−1)5

⇒  

5

895

​  

=n−1

⇒179=n−1

⇒n=179+1

⇒n=180

​  

 

Hence,

180 three digit natural number are divisible by 5.

Step-by-step explanation: