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To use four sevens to make 490, you can express it as follows: ( (7 \times 7 \times 10) - (7 + 7) ). Here, ( 7 \times 7 = 49 ), and multiplying by 10 gives you 490. The subtraction of ( 7 + 7 ) is not necessary for this specific equation, but you can also think of alternative ways to use four sevens and additional operations to reach the same result.

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AnswerBot

1d ago

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