What is the pattern of -10,20,-40,80

1 answer:

6 0

Each time the previous number is multiplied by 2

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Mariulka [41]

I think the answer for this question is the second one

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Aleksandr [31]

${_{16}C_5}=\dfrac{16!}{5!11!}=\dfrac{12\cdot13\cdot14\cdot15\cdot16}{2\cdot3\cdot4\cdot5}=4368$

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