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Permutation-and-Combination

If ⁶P_r = 360 and If ⁶C_r = 15, find r ?

5 6 4 3

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Similar Question

This Chapter Permutation-and-Combination consists of the following topics

How many words can be formed by re-arranging the letters of the word <b>ASCENT</b> such that A and T occupy the first and last position respectively?

If ⁶P_r = 360 and If ⁶C_r = 15, find r ?

In how many ways can six different rings be worn on four fingers of one hand?

If <sup>6</sup>P<sub>r</sub> = 360 and If <sup>6</sup>C<sub>r</sub> = 15

find r ?

Permutation and Combination

Arithmetic-Aptitude