Question

How many two digit numbers are divisible by 3​

Answer 1

Answer:

30

Step-by-step explanation:

AP Method:

Minimum 2 digit number divisible by 3, 'a' = 12

Common Difference, 'd' = 3

Maximum number divisible by 3, 'a(n)' = 99

$a_{n} = a + (n-1)d\\99 = 12 + (n-1)*3\\87 = (n-1)*3n-1 = 29n = 30$

Hope that Helps...