Question

calculate the three digit number which are multiple of 9

Answer 1

Answer:

Step-by-step explanation:

three digits number that are multiples of 9 are

144, 153, 162 ,171...

Answer 2

Answer: n <111

Step-by-step explanation:First number is 9 then 10 then 27 which forms an A. P. (Arithmetic progression) and formula of n th term is a+(n-1)d where a is first term, d is the common difference and n n is the n th term.

So, a is 9

d is (18-9) or (27-18) i.e. 9

a+(n-1)d <999

9+(n-1)x 9 <999

(n-1) x 9< 999-9

n-1 < 990/9

n-1 < 110

n< 110+1

n < 111

By using option there will be the answer.