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9 October, 09:16

At an election there are 5 candidates and 3 members are to be elected. A voter is entitled to vote for any number of candidates not greater than the number to be elected. In how many ways a voter can vote?

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  1. 9 October, 13:14
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    Voters can select their members in 10possible ways

    Step-by-step explanation:

    According to the question, the voters are to elect 3members out of 5 candidates, this means they are to select any 3 candidates of their choice from a pool of 5 candidates. Since "combination" has to do with selection, we use the combination formula.

    To select 'r' objects from 'n' pool of objects, we have;

    nCr = n! / (n-r) ! r!

    5C3 = 5! / (5-3) !3!

    5C3 = 5!/2!3!

    5C3 = 5*4*3*2*1/2*3*2

    = 120/12

    5C3 = 10

    Candidates can therefore vote in 10 possible ways
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