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What number makes 2530 divisible by 9

User Innom
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1 Answer

3 votes
If the number is divisible evenly by 9, the sum of its digits must be divisible by 9.
2+5+3+0=10
What single digit can you add to 10 to get a number divisible by 9?

Just 8. Only 8 would work. It would make 18, and 18 is divisible by 9.
User Jerry Krinock
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