Verified answer

Question:

Which of the following numbers is exactly divisible by 2, 5 and 10?

A. 445

B. 450

C. 505

D. 502

Answer:

Among the choices above, the correct answer is “B. 450”.

Explanation:

Divisibility Rules:

1. Divisibility rule by 2:

• To be divisible by 2, the last digit of number must be 0, 2, 4, 6, or 8.

2. Divisibility rule by 5:

• To be divisible by 5, the last digit of number must be 0 or 5.

3. Divisibility rule by 10:

• To be divisible by 10, the last digit of number must be 0.

∆ Therefore, the correct answer is 450 because its last digit is 0, which complies the three numbers given above.

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