Question

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

Answer 1

ANSWER:

• Number of two digit number Divisible by 3 is 30

GIVEN:

• Two digit number Divisible by 3.

TO FIND:

• Number of two digit number Divisible by 3.

SOLUTION:

First two digit number Divisible by 3 is 12.

Second two digit number Divisible by 3 is 15.

Last two digit number Divisible by 3 is 99.

So the Required A.P :

= 12, 15 ,18 .......... 99

Here:

First term (a) = 12

Last term = 99

Common difference = 3

Formula:

=> nth term = a+(n-1)d

Putting the values in the formula:

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

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

=> 87 = 3(n-1)

=> 87/3 = n-1

=> 29 = n-1

=> 29+1 = n

=> n = 30

Number of two digit number Divisible by 3 is 30

Answer 2

Answer: 30

Step-by-step explanation:First term a = 12

Common difference d = 3

An = 99

Using the formula for An,

An= a + ( n -1 ) d

99 = 12 + ( n -1 ) 3

87 /3 = n -1

29 = n -1

n = > 30

Hence there are 30 two digit numbers are divisible by 3

hope it helped you :)