Question

2. How many two digits numbers are divisible by 3 ?​

Answer 1

Answer:

infinite

Step-by-step explanation:

Answer 2

Solution :

From the above Question the A.P. will be 12 , 15 , 18 , 21 , 24 ............ 99

Here ,

First term (a)  = 12

Common difference (d) = 3

Last term (a_n) = 99

Using the formula

a_n = a + (n-1) d

⇒ 99 = 12 + (n-1) 3

⇒ 99 = 12 + 3n - 3

⇒ 99 = 12 - 3 + 3 n

⇒ 99 = 9 + 3n

⇒ 99 - 9 = 3n

⇒ 90 = 3n

⇒ n = 90/3

⇒ 30

Therefore , Our Required answer is 30