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15 November, 08:58

We have 10 blocks, of which 5 are green, 3 are red, 1 is white, and 1 is black. If we put the blocks in a line, how many arrangements are possible?

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  1. 15 November, 10:20
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    5040 ways

    Step-by-step explanation:

    Since there are 10 blocks,

    It can be arranged in 10! ways

    But there is 5 green, 3 red, 1 white and 1 black blocks.

    Therefore, the blocks can be arranged in 10! / (5!*3!*1!*1!) ways

    = 5040 ways
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