19. The total number of ways in which six ‘+’ and four ‘- signs can be arranged in a line such that no two ‘-‘ signs occur togeth

Question

19. The total number of ways in which six ‘+’ and four ‘- signs can be arranged in a line such
that no two ‘-‘ signs occur together is
(a) 7!/3
(b) 6!_7!/3(c) 35
(d) none of these

th​

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Jasmine 1 month 2021-08-12T19:55:04+00:00 1 Answer 0 views 0

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    0
    2021-08-12T19:56:31+00:00

    Answer:

    Among 6

    +

    there are 7 intervals

    X+X+X+X+X+X+X

    Number of ways of filling 7 gaps by 4

    =

    7

    C

    4

    =35

    ∴ Required ways =35

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