Question

how many numbers are divisible by 9 between 1 and 90​

Answer 1

Answer:

you have to take the multiples of 9

the numbers divisible by 9 are

9

18

27

36

45

54

63

72

81

90

Answer 2

Answer:

9

Step-by-step explanation:

The question is between 1 and 90.

So, we will not consider 1 and 90. Then, it becomes 2-89.

a=9, d=9, tn = 81

81=9+(n-1)x9

81=9+9n-1

81=8+9n

73=9n

n=73÷9

n=~9