Question

Find the number of odd integers
between
2 and 100 divisible
by 9 by A.p​

Answer 1

Answer:

10

Step-by-step explanation:

well we can evaluate that the last digit that comes before 100 and is divisible by 9 is 99

so we have

a=9, d=9, An=99

here,

(An= last digit of the ap)

then we know that,

An= a+(n-1)d

putting the values we get,

99=9+(n-1)9

90=(n-1)9

90/9 = (n-1) = 9

n=10