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Mathematics 13 Online
YoursTruly:

Find the 20th term in the sequence of 1, -2, 4, -8 . . . A. 1048576 B. -524288 C. -1048576

Ultrilliam:

it follows this pattern multiply the last number by 2, but every other number is turned to a negative number

Ultrilliam:

so it would be 1 -2 4 -8 16 -32 64 -128 and so on

Ultrilliam:

just keep following the pattern 20 times, and then you'll have your answer.

YoursTruly:

K ty

Ultrilliam:

np

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