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Number of necklaces can be formed with 4...

Number of necklaces can be formed with 4 identical beads and two distinct jewels is 'k', then k divides

A

`15`

B

`35`

C

`21`

D

`105`

Text Solution

Verified by Experts

The correct Answer is:
A, C, D
`(1)/(2)((5!)/(4!)+1)=3.`
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Knowledge Check

  • How many different necklaces can be formed with 6 White and 5 Red beads?

    A
    18
    B
    24
    C
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    D
    27

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    D
    3

  • The number of values of k for which the equation x^(2) -3x +k=0 has two distinct roots lying in the interval (0, 1) are interval (0, 1) are

    A
    three
    B
    two
    C
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    D
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