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18 March, 03:15

The sequence 32, a, b, c, 512 is a geometric sequence. Find a, b, c

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  1. 18 March, 06:45
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    A=152 b=272 c=392

    512=32 + (5-1) d

    512=32+4d

    -32. - 32

    480=4d

    :4. : 4

    120=d (difference)

    32+120=152 (a)

    152+120=272 (b)

    272+120=392 (c)
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