Question

write in usual form (100×1) + (10×2) + (1×9)​

Answer 1

Answer:

$\to(100 \times 1) + (10 \times 2) + (1 \times 9) \\ \\ = 100 + 20 + 9 \\ \\ = 120 + 9 \\ \\ = 129$

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Answer 2

Answer:

100×1=100

10x2=20

1x9=9

so,100+20+9=129