Question

Complete the following activity to find three-digit natural numbers divisible
by 5.
Three-digit natural numbers divisible by 5 are 100, 105, 110, ..., 995.
11,= 995
= 100, d =
Here, a=
... (Formula)
11
995 = 100+ (n - 1) x 5
.:995 =
(
..n=?​

Answer 1

Answer:

a=100. d=105-100=5

995=a+(n-1)d

995=100+(n-1)5

995-100=5n-5

895+5=5n

900=5n

900/5=n

180=n