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Question

If you add 100 to the smallest 4-digit number that can be formed by using digits 1, 8, 4 and 9, then the result is ____.

A
1489
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B
1598
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C
1589
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D
1389
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Solution

The correct option is C 1589
To find the smallest number from the given digits, we arrrange the digits in ascending order.

Since 1<4<8<9, the smallest 4-digit formed from these digits is 1489.

When we add 100 to 1489, we get 1589.

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