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Bunuel
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The number 8800 is in itself divisible by 22, 25, 32.

A number being divisible by another number can be proved by expressing in this below format.

8800 = 22 * K (or) 25 * Q (or) 32* A.

The number is "divisible" by all 3 numbers.

I believe it is best if the language of the question is changed. pls let me know your thoughts

It’s not really clear what you mean here. The question is not asking for a number that is itself divisible by 22, 25, and 32. It’s asking for the largest 4-digit number n such that the sum of 7,700 + n is divisible by all three numbers. The focus is on the divisibility of the total, not of n alone.
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I don’t quite agree with the solution. 8,800 is divisible by 22, 25, 32, and that is 7,700 = 1,100. So why is any 9,900? Can someone explain? TIA
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I don’t quite agree with the solution. 8,800 is divisible by 22, 25, 32, and that is 7,700 = 1,100. So why is any 9,900? Can someone explain? TIA
1,100 is the smallest number that can be added to 7,700 to get a multiple of 8,800:

7,700 + 1,100 = 8,800

But the question asks for the largest 4-digit number. If we add another 8,800 to 1,100, we get:

1,100 + 8,800 = 9,900

And:

7,700 + 9,900 = 17,600

which is also divisible by 8,800. So 1,100 works, but 9,900 is the largest 4-digit value that works.
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