Which one of the following numbers is completely divisible by 45?

Question: Which one of the following numbers is completely divisible by 45?

[A].

181560

[B].

331145

[C].

202860

[D].

2033555

Answer: Option C

Explanation:

45 = 5 x 9, where 5 and 9 are co-primes.

Unit digit must be 0 or 5 and sum of digits must be divisible by 9.

Among given numbers, such number is 202860.