The generalised form of 6789 is

6000×1 + 700×1 + 80×1 + 9×

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1000×6 + 100×7 + 10×8 + 1×9

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6000+700+80+9

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1×6 + 7×10 + 8×100 + 9×1000

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Solution

The correct option is B 1000×6 + 100×7 + 10×8 + 1×9
The generalised form of any number abcd is
(1000×a)+(100×b)+(10×c)+(1×d)
So, the generalised form of 6789 is
(1000×6) + (100×7) + (10×8) + (1×9)
Therefore, option b is correct.

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