# Which of the following, will be fully divided by 45?

- 331145
- 181560
- 2023550
- 202860

**Answer: (4) 202860**

**Explanation:-**

**Divisibility of 45 :- If a **number is divisible by 9 & 5 then that number will be divisible by 45.

**Divisibility of 5:-** If last digit of a number is 0 or 5 then that number will be divisible by 5.

**Divisibility of 9 :- **If sum of digits of a number is divisible by 9 than that number will be divisible by 9.

In this question, last digit of all numbers are 0 or 5. So, all numbers are divisible by 5.

Check the divisibility of 9 in all options,

Option (1) 331145

The sum of the digits of 331145 = 3 + 3 + 1 + 1 + 4 + 5

= 17, 17 is not is not divisible by 9.

Option (2) 181560

The sum of the digits of 181560 = 1 + 8 + 1 + 5 + 6 + 0

= 21, 21 is not divisible by 9.

Option (3) 2023550

The sum of the digits of 2023550 = 2 + 0 + 2 + 3 + 5 + 5 + 0

= 17, 17 is not divisible by 9.

Option (4) 202860

The sum of all digits of 202860 = 2 + 0 + 2 + 8 + 6 + 0

= 18, 18 is divisible by 9.

Thus, number 2028860 is completely divisible by 45.

Hence, correct answer is option (4) 202860.