Question

le-7. How many two-digit numbers are divisible by 3?​

Answer 1

Answer:

3,6,9,12,15,18,21,24,27,30,.......

30 two - digit numbers are divisible by 3

Answer 2

Answer:

There are 30 two digit number divisible by 3.

Step-by-step explanation:

We need to find n

If we see then last no. of two digit divisible by 3 is 99.

so , An =99

and , A =12

d=15 - 12 = 3

Now , An= A +(n - 1)d

putting values ,

99 = 12+(n - 1) (3)

99 = 12 + 3n - 3

99 = 9+3n

3n =99 -9

3n=90

n = 90/3

n=30.

( here An is not article we use in English it is value taken . )( this signature (-) represent minus.)