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Round off to the nearest $10, 100,$ and $1000$ : $1289$ .

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1290, 1389, 1009

1290, 1300, 1000

1280, 1300, 1200

1280, 1200, 1000

answer is B.

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Detailed Solution

It is given that we have to round off the number 1289 to the nearest 10, 100, and 1000.
Round off to 10 for 1289 is 1280 or 1290 but nearest to 1289 is 1290.
So, round off to the nearest

10

1290

.
Similarly, round off to 100 for 1289 is 1200 or 1300 but nearest to 1289 is 1300.
So, round off to the nearest

100

1300

.
Round off to 1000 for 1289 is 1000 or 2000 but nearest to 1289 is 1000.
So, round off to the nearest

1000

1000

.
The round off of 1289 to 10, 100, and 1000 is

1290, 1300, 1000

respectively.
Hence the correct option is 2.

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