Total number of permutations of k differ...

Total number of permutations of k different things, in a row, taken not more than r at a time (each thing may be repeated any number of times) is equal to Options: `1.k^r -1` `2. k^r` `3.(k^r-1)/(k-1)` `4.k(k^r-1)/k-1`

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Total number of permutations of k different things, in a row, taken not more than r at a time (each thing may be repeated any number of times) is equal to Options: `1.k^r -1` `2. k^r` `3.(k^r-1)/(k-1)` `4.k(k^r-1)/k-1`

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