In how many ways can the letters of the word PENCIL be arranged so ...
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In how many ways can the letters of the word PENCIL be arranged so that
(i) \( \mathrm{N} \) is always next to math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymi mathvariant=normalE/mi/math?
(ii) \( \mathrm{N} \) and \( \mathrm{E} \) are always together?
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