NCERT Example - Divisibility by 9 - Number Play

Question: Without dividing, which of 123, 405, 8888, 93547, 358095 are divisible by 9? What is the smallest multiple of 9 with no odd digits?

Answer: Only 405 is divisible by 9 among the list. Smallest even-digit multiple of 9 is 288.

Full step-by-step NCERT solution with diagrams on Something by Zero.