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Question

Determine the smallest number that should be added to 1321 to make it divisible by 10.


A
5
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B
9
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C
8
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D
3
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Solution

The correct option is C 9

A number is divisible by 10 if it has 0 in its ones place.

The ones digit of 1321 is 1.

After 1321, the smallest possible number that ends with zero is 1330.

Let x be the number that is added to 1321 to make it 1330 so that it is divisible by 10.
1321 + x = 1330
x = 1330 - 1321
x = 9.
Therefore, 9 should be added to 1321 to make it divisible by 10.


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